Rare Book & Manuscript Library
 

Edwin H. Armstrong papers, 1886-1982, bulk 1912-1954

Series VI: Photographs, Negatives and Lantern Slides, 1886-1967

This series contains photographic media, arranged alphabetically. They are separated into two different types of materials; photographs with the negatives, followed by lantern slides. The series spans the course of Armstrong's life including childhood, military service in WWI, and his work in the Marcellus Hartley Laboratory at Columbia University. Images of the apparatus used in the development of regenerative circuit, the superheterodyne circuit and FM radio are also included. The FM-radio materials include the first tests of FM at the Empire State Building, Westhampton Beach, New York and Haddonfield, New Jersey, construction and operation of the first FM tower at Alpine, NJ, and the Yankee Network. Lantern slides that are duplicated in the photographs or negative are marked as "duplicate."

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General


Apparatus



Box 265 Folder 1 2660 Megacycle Receiver and Transmitter On Test Bench In Electronic Laboratory Car With Automatic Recording Instruments, undated, 2660, undated


Box 265 Folder 2 Apparatus In Tent at Ardrossan, Scotland, undated


Box 265 Folder 3 De Forest Audion Detector; Receiving Cabinet, undated


Box 265 Folder 4 Description of Lantern Slides, undated


Box 265 Folder 5 Empire State Building; FM Transmitters Installed By Armstrong, E.H.,, 1934-1935


Box 265 Folder 6 FM Radio--Apparatus Used in the First Presentation of FM to the Engineering World, Reception of W2AG Broadcast from Yonkers, NY,, 1935 November


Box 265 Folder 7 General Electric FM Radio Set, undated


Box 265 Folder 8 Installation of the "Runyon Transmitter" On the Chimney of Randy Runyon's Beach House in Mantoloking, New Jersey, undated (includes negative), undated


Box 265 Folder 9 Original Components of the Regenerative Circuit, undated


Box 265 Folder 10 S.S. President Harding Experimental Facsimile Receiver for Daily Reception of Complete Weather Maps,, undated


Box 265 Folder 11 Turbines and Generators--Chicago Edison, Boston Edison, Commonwealth Edison, [1915]


Box 265 Folder 12 U.H.Apparatus [Labeled "Criswell Photos"], 1934-1936, 1939-1941, 1934-1936, 1939-1941


Box 265 Folder 13 Washington Apparatus-- Includes Correspondence from Weigant to Hughes,, 1926 March 19


Box 265 Folder 14 Unidentified Apparatus, 1920, 1936-1937, 1920, 1936-1937


Box 265 Folder 15 Unidentified Apparatus, undated (includes negatives), undated


Box 265 Folder 16 Unidentified Apparatus [Possibly Power Amplifier], undated


Armstrong, E.H.


Box 265 Folder 17 Armstrong, E.H., 1940 May 8


Box 265 Folder 18 Armstrong, E.H. and Paul De Mars at Westhampton Beach, 1947


Box 265 Folder 19 Armstrong, E.H. and Unidentified in Academic Robes; Wilson-Degree at Columbia University,, undated


Box 265 Folder 20 Armstrong, E.H. Holding a Trophy Next to Unidentified Holding a Tennis Racket, Vermont,, undated


Box 265 Folder 21 Armstrong, E.H. In Later Life, Portrait by Fabian Bachrach, undated


Box 265 Folder 22 Armstrong, E.H. Installing an Antenna On a Chimney, undated


Box 265 Folder 23 Armstrong, E.H. On Couch With Unidentified, undated


Box 265 Folder 24 Armstrong, E.H. Presenting a Paper to the American Institute of Electrical Engineers in New York,, 1947


Box 265 Folder 25 Armstrong, E.H. Receiving the Washington Award from the Western Society of Engineers (L to R: Calvert, John H; Sykes, Wilfred; Armstrong, E.H.; Sedwick, H.P);, 1951 February 19


Box 265 Folder 26 Armstrong, E.H. Receiving Honorary Degree of Doctor of Science from Dr. Levering Tyson, President of Muhlenberg College,, 1941 June 2


Box 265 Folder 27 Armstrong, E.H. Receiving the Edison Medal from the AIEE in New York City, Pictured with Gerald Swope receiving the Hoover medal and Willie R. Whitney receiving the John Fritz Medal,, 1943 January 27


Box 265 Folder 28 Armstrong, E.H., R. Wand and D. Dembar in the Palisades, undated



Box 266 Folder 1 Armstrong vs. De Forest Before Judge Mayer in Courtroom, 1921 (negative only), 1921


Box 266 Folder 2 Columbia University-- John H. Bose and E.H. Armstrong in Dean Danning's office,, 1953 March 16


Box 266 Folder 3 Dedication Ceremonies of 1BCG monument, with Ernest V. Amy, E. H. Armstrong, George E. Burghard, Orestes H. Caldwell, Paul Godley, and Wilbur H. Peck, in Greenwich, Connecticut,, 1950 October 21


Box 266 Folder 4 Franklin Institute Awards in the Field of Science with E.H. Armstrong, Ralph A. Sayre, and Gerard Campbell,, 1941 January 8


Box 266 Folder 5 Group Including E.H. Armstrong, Perry Osborn, Charley Fowler, John Bose, T.J. Styles,, undated


Box 266 Folder 6 "Hero of Corregidor"--Sergeant Irving Strobing Receives VWOA Scholarship from William J. McGonigle, at the Radio Pioneers Dinner, Pictured with E.H. Armstrong, George W. Bailey, and William Everitt,, 1945 November 8


Box 266 Folder 7 Image of Plaque with Portrait of E.H. Armstrong Dedicated to William Thomas Russell,, undated


Box 266 Folder 8 Major Edwin H. Armstrong and Major General Roger B. Colton, 1944


Box 266 Folder 9 Major General H.C. Ingles Presents the First Certificate of Appreciation to Dr. E.H. Armstrong,, 1944 June 17


Box 266 Folder 10 Passport (United States) Belonging to E.H. Armstrong,-- Includes British and French Visas,, 1922 August 19


Box 266 Folder 11 Portrait of Armstrong, E.H., undated (negative only), undated


Box 266 Folder 12 Portrait of Armstrong, E.H. While a Student at Columbia University, Signed "Holston, N.Y.,", undated


Box 266 Folder 13 Professor Armstrong Presented With a Certificate of Honorary Membership in the Columbia Engineering Alumni Association by A. Dexter Hunckley,, 1951 May 3


Box 266 Folder 14 Professor W.H. Lighty and E.H.Armstrong, at the University of Wisconsin, 1945 (includes correspondence), 1945


Box 266 Folder 15 Restaurant Gathering, All In Tuxedos With Armstrong in the Rear "Guest of Honor" Position, Pans,, undated


Box 266 Folder 16 Sadenwater, Harry and E.H. Armstrong, undated


Box 266 Folder 17 "The Major" (Armstrong, E.H.) On the Phone As Usual, 1940 June 29


Box 266 Folder 18 Wedding Photographs of Evelyn Kreft Peterson (Mrs.George G.) and Thelma Cleven Stead (Mrs. David N), Both With Armstrong, E.H.,, undated


Box 266 Folder 19 Yankee Network--E.H. Armstrong, and Yankee Network car, undated


Box 266 Folder 20 Armstrong, Marion-- Margaret Foster Smith and Marion Armstrong, Being Pushed in a Tourist Cart,, undated


Box 266 Folder 21 The Armstrong Medal [both sides], undated



Box 282 Folder 1 Bachelor Dinner for George Burghard, 1928 January 20



Box 266 Folder 22 Brinkman, Harold A. and Glenn D. Gunn Speaking Over the First FM Network,, 1947 March 26


Box 266 Folder 23 Calendar--Summer House of E.H. and Marion Armstrong at Rye Beach, New Hampshire, 195


Box 266 Folder 24 Catskills [Mountain House], undated


Box 266 Folder 25 Christmas Card and Larger Photograph of a Group of Unidentified Individuals, Including Emily Smith Armstrong and Ethel Armstrong Hammond,, 1932


Box 266 Folder 26 Correspondence From B. Roger Colton of the War Department, Army Services Forces Regarding a Photograph of a Gentleman Saying "Frequency Modulation is the Answer to all Problems,", 1944 September 19


Box 266 Folder 27 Correspondence From Ann Mosher, Associate Editor of Today's Woman Regarding Photographs For Mrs. (Esther Marion) Armstrong's article, 1948 June 3


Box 266 Folder 28 Envelope With Written Description of Individuals Present at Edwin H. Armstrong Awards,, undated


Box 266 Folder 29 Fashion Parade--A.C. Armed Forces--Air Force Fire-Fighting Suit and Parachute Suit,, 1950 March 31



Box 282 Folder 10 FM Broadcasters Inc.--Fifth Annual Meeting, New York City, 1944 January 26-27



Box 266 Folder 30 FM Demonstration--Mortimer Fogel, Present at Demonstration of Ira Hirschmann's Broadcast at the Engineering Society Building,, 1947


Box 266 Folder 31 Hispano-Suiza Car Insurance Receipt, Paris, 1922 October 9


Box 266 Folder 32 Interior View--Labeled "Poughkeepsie, J.R. Day, John H. Bose,", 1940 March 21


Box 266 Folder 33 Mrs. Barbara Musselman's Children at Christmas, 1951



Box 282 Folder 11 National Modern Pioneers Banquet, New York, 1940 February 27



Box 266 Folder 34 Negatives Recopied and "Blown Up" to 8x10 Size For Mr. Horace Coon For Use In His Story For "Science Illustrated," 1946 February 28 (negatives only), 1946 February 28


Box 266 Folder 35 New York Evening World Cartoon, "Who said Radio for Shut-Ins?"--Regarding Skyrocketing of "Radio Common," 1928 March 14 (includes negative), 1928 March 14


Box 266 Folder 36 New York Times Front Page as Transmitted by Facsimile Over FM,, 1934 November 24


Newspapers, Yonkers Area


Box 266 Folder 37 The Yonkers Statesmen, 1913 February


Box 266 Folder 38 Tarrytown Daily News, 1913


Box 266 Folder 39 Mt. Pleasant Daily News, 1913 February 8


Box 266 Folder 40 Performance of Phil Spitalny's Hour of Charm Radio Show at Proctor's Theater, Schenectady, New York,, undated


Box 266 Folder 41 The Porch on Back of House Facing #2 Fairway, undated


Box 266 Folder 42 Postcard of The Bungalow, Residence of H.H. Jenkins, in Norfolk, Connecticut,, undated


Box 266 Folder 43 Road Map of New England With List of Radio Stations, 1940 (negative only), 1940



Box 267 Folder 1 Snapshots Taken at Fred Hargescheimer's in White Bear Lake, Minnesota,, 1951 July


Box 267 Folder 2 Underhill Buildings in Lower Bank, undated


Box 267 Folder 3 US Army Band [as heard on Wednesday FM radio] at Fort Myer, VA, undated (includes correspondence), undated


Box 267 Folder 4 US Army Air Forces Band [as heard on Thursday FM radio] at Boiling Field, Washington D.C.,, undated


Box 267 Folder 5 US Army Air Forces Band Performing the First Post-War FM Network Landline and Radio Link Broadcast,, 1947 March 26


Box 267 Folder 6 View of [Hudson] River, undated


Box 267 Folder 7 Unidentified House with Ladders and Wiring Strung Up the Side, 1939 December 19


Box 267 Folder 8 Unidentified Individuals, undated


Box 267 Folder 9 Unidentified Man--Portrait, undated (includes negative and original envelope), undated



Box 282 Folder 2 Unidentified Man--Portrait by Fabian Bachrach, undated



Box 267 Folder 10 Unidentified Man With Apparatus, undated (negative only), undated


Box 267 Folder 11 Unidentified Man With Radio--Interior View, 1943 January 25


Box 267 Folder 12 Unidentified Radio Pole, undated (negative only), undated


Box 267 Folder 13 Unidentified Radio Towers--Exterior Views, undated


Box 267 Folder 14 Unidentified Tangle of Wires, undated (negatives only), undated


Aeolian Hall, New York City


Box 267 Folder 15 Armstrong, E.H. Climbing WJZ Station's Antenna Tower--Close-up View, 1923 May 14


Box 267 Folder 16 Armstrong, E.H. Climbing WJZ Station's Antenna Tower--View From Ground, 1923 May 14 (includes negatives), 1923 May 14


Alpine, New Jersey


Individuals


Armstrong, E.H.


Box 267 Folder 17 Armstrong, E.H. and Harry "The Rigger" Jorgenson on Turnstile Antenna, undated (includes negatives), undated


Box 267 Folder 18 Armstrong, E.H. and Unidentified on Radio Tower, undated (includes negatives), undated


Box 267 Folder 19 Armstrong, E.H., Charley Fowler, and Unidentified Individual Wearing Homemade Ice Shields to Protect From Falling Ice, 1941 January 18 (includes negative), 1941 January 18


Box 267 Folder 20 Armstrong, E.H. and Unidentified Standing on Radio Tower, undated


Box 267 Folder 21 Armstrong, E.H. and Unidentified in Front of W2XMN Building, undated


Box 267 Folder 22 Armstrong, E.H. and Unidentified in Front of FM Transmitter Apparatus,, undated


Box 267 Folder 23 Armstrong, E.H., R. Allsofo and Unidentified in Front of W2XMN Building,, 1945 November


Box 267 Folder 24 Armstrong, E.H. on Icy Radio Tower, 1940


Box 267 Folder 25 Armstrong, E.H. and Group at the Base of the Radio Tower, undated (includes negatives), undated


Box 267 Folder 26 Armstrong, E.H. and Unidentified With Radar Antenna, undated (negative only), undated


Box 267 Folder 27 Armstrong, E.H. and Unidentified in Front of a Shed in Winter, undated


Fowler, Charley


Box 267 Folder 28 Fowler, Charley With Crowbar on Icy Radio Tower, undated


Box 267 Folder 29 Fowler, Charley, Perry Osborn and Unidentified in Front of Shed, undated (negative only), undated



Box 268 Folder 1 Fowler, Charley and Unidentified on Radio Tower, undated (includes negatives), undated


Box 268 Folder 2 Fowler, Charley on Construction Site of the Radio Tower, 1937 (includes negatives), 1937


Box 268 Folder 3 Fowler, Charley With a Cigarette, undated


Box 268 Folder 4 FMA Party, 1947 September 13


Box 268 Folder 5 Gempp, Ted--In the Control Room, 1952 February


Osborn, Perry


Box 268 Folder 6 Osborn, Perry, undated


Box 268 Folder 7 Osborn, Perry In the Control Room, 1941 September 29


Box 268 Folder 8 Osborn, Perry Shown With Various Transmitting Equipment [Including Captions],, 1939 July 7


Box 268 Folder 9 Osborn, Perry With Original and Updated Multiplexing Units, undated


Box 268 Folder 10 Osborn, Perry With Transmitting Apparatus, undated (negative only), undated


Unidentified Individuals


Box 268 Folder 11 Unidentified Individuals with Transmitter Apparatus, undated


Box 268 Folder 12 Unidentified Individuals Around the Construction Site of the Tower,, 1937


Box 268 Folder 13 Unidentified Individuals on the Radio Tower, undated (includes negatives), undated


Box 268 Folder 14 Unidentified Individuals on Icy Radio Tower, 1953 January 10


Box 268 Folder 15 Unidentified Individuals Standing with Radar Antenna, undated


Box 268 Folder 16 Correspondence From William Maron Regarding Photographs Taken at Alpine,, 1947 September 27


Interior Views


Box 268 Folder 17 Blower Unit, Motor Generator, Rectifier and Relay Group, undated


Box 268 Folder 18 Control Room, 1941 September 29 (includes negatives), 1941 September 29


Box 268 Folder 19 Control Room, 1952 February


Box 268 Folder 20 Control With Rack Equipment for the Generation of Frequency Modulated Current,, undated


Box 268 Folder 21 Early Model of Intermediate Stages--Frequency Multipliers and Low Power Amplifiers,, undated


Box 268 Folder 22 FM Transmitter Apparatus, 1943


Box 268 Folder 23 Final [High Power Amplifier] Stage Shielded Behind Copper Screening, undated (includes negatives), undated


Box 268 Folder 24 High Band Apparatus, undated



Box 269 Folder 1 High Power Amplifier, 1938 August 29 (includes negatives), 1938 August 29


Box 269 Folder 2 High Power Amplifier and Intermediate Stage, 1938 May 4 (negatives only), 1938 May 4


Box 269 Folder 3 Original Frequency Multiplier and Intermediate [low power] Stages,, 1940 May 7


Box 269 Folder 4 Power Amplifier High Band Apparatus, 1952 February


Box 269 Folder 5-6 Radar Lab Apparatus, 1948 October 11, undated (negatives only), 1948 October, undated, (2 Folders)


Box 269 Folder 7 Relay High Frequency Transmitter, undated


Box 269 Folder 8 Single Unit Grid Isolation Oscillator Set Up With Solid Dielectric Feedback Cable,, undated


Box 269 Folder 9 Unidentified FM Transmitter Apparatus, undated


Exterior Views


Box 269 Folder 10 40 Megacycle Turnstile Antenna, 1940


Box 269 Folder 11 Air View of 400 Foot Radio Tower and Transmitter Building, undated (includes negatives), undated


Box 269 Folder 12 Antenna on Corner of W2XMN building, 1941 January 17


Box 269 Folder 13 Base of the Radio Tower, undated (includes negatives), undated


Box 269 Folder 14 Cable Connections on Tower, 1946 January



Box 284 Ceramic Plate Featuring Alpine Tower, undated



Box 269 Folder 15-17 Construction of the Tower, 1937 (includes negatives), 1937, (3 Folders)



Box 270 Folder 1-2 Construction of the Tower, 1937, (2 Folders)


Box 270 Folder 3 Construction at the W2XMN Building Site, 1937 August 2


Box 270 Folder 4-5 Early Construction Site, 1937 March (includes negatives), 1937 March, (2 Folders)


Box 270 Folder 6 Eight Bay Doughnut Antenna, 1947 January 31


Box 270 Folder 7 Exterior View of Water Tower, 1937 May 26


Box 270 Folder 8 Exterior View of W2XMN Building, undated (includes negative), undated


Box 270 Folder 9 Exterior Views Taken From the Radio Tower, undated (includes negative), undated


Box 270 Folder 10 Installation of the Turnstile Antenna, undated (includes negatives), undated



Box 283 Metal Etching of Alpine Tower, undated



Box 270 Folder 11 Most Widely Publicized View of Alpine Tower, Made With a "Brownie Box" Camera, undated (includes negative), undated


Box 270 Folder 12-13 Original Radio Mast, 1937 November 10, December 4 (includes negatives), 1937 November, (2 Folders)



Box 282 Folder 3 Poster of Alpine Tower, undated



Box 271 Folder 1-2 Radar Tower, 1949 November, undated (negatives only), 1949, undated, (2 Folders)


Box 271 Folder 3 Radio Tower Before Erection of Turnstile Antenna, 1938 (includes negatives), 1938


Box 271 Folder 4-5 Radio Tower, 1948 June 17, 1950 June, 1948 June, 1950 June, (2 Folders)


Box 271 Folder 6 Radio Tower With Turnstile Antenna, undated (includes negatives), undated


Box 271 Folder 7 Stump of Tree Struck by Lightning Near Tower, 1941 July 2 (includes hand-drawn diagram), 1941 July 2


Box 271 Folder 8 Two Pairs of RG190 Cables From Antenna Elements Connecting to the Half-Wave Matcher,, 1947 April 26


Box 271 Folder 9 Transformers Outside W2MXN Building, undated (includes negatives), undated


Captain H.J. Round


Box 271 Folder 10 Autographed Photographs, 1960, 1964, 1960, 1964


Box 271 Folder 11 Images of Pages From "Wireless at Sea" By H.E. Hancock [text Concerning Captain Round in the Army],, undated


Connecticut State Police


Box 271 Folder 12 Armstrong, E.H. Standing With Police, undated


Box 271 Folder 13 FM Car Radio Apparatus and Installation In Vehicle, undated


Box 271 Folder 14 FM Car Radio Dispatcher and Station, undated


DeMars, Paul


Box 271 Folder 15 Pictures Taken In Iran, undated


Box 271 Folder 16 DeMars, Paul Standing With Apparatus, undated


Early Family and Childhood


Box 271 Folder 17 Armstrong House and Surrounding Area, undated


Box 271 Folder 18 Armstrong, Cooper, Robinson, Ross, Morris, Mason, Sage, Stewart and Smith Families in Group Photograph, undated (includes individual identification on back), undated


Box 271 Folder 19 Armstrong, E.H. As An Adolescent, undated


Box 271 Folder 20 Armstrong, E.H. at Six Months old, 1891


Box 271 Folder 21 Armstrong, E.H. Standing in Front Of a Barn as a Child, Puckere, 1897


Box 271 Folder 22 Armstrong, E.H. With Sisters Edith and Ethel, 1893, undated, 1893, undated



Box 272 Folder 1 Armstrong, E.H. With Toys, Recovering From Scarlet Fever; With Sister Ethel Gertrude,, undated


Box 272 Folder 2 Armstrong Edith Rissie, Later Mrs. Thomas H. Beardsley-- Baby Photographs--Portrait; After Marriage, undated,, 1939 June


Box 272 Folder 3 Armstrong, John-- Studio Photograph Holding Cane and Hat-- Portrait--In Chair With Unidentified,, undated


Box 272 Folder 4 Armstrong, Mary, undated


Box 272 Folder 5 Derthick Farm--Armstrong Family in Hammock, undated


Box 272 Folder 6 Early Radio Anchorages, undated


Box 272 Folder 7 Family Photographs, undated


Box 272 Folder 8 Family Playing Tennis, undated


Box 272 Folder 9 Group Photograph Including Emily S.Armstrong, John Armstrong, Edith Armstrong, and E.H. Armstrong, Holding Sign that Reads "Reception Committee for the biggest kidder on Lake George,", undated


Box 272 Folder 10 House at 1032 Warburton Ave, Yonkers, NY, undated, 1032, undated


Box 272 Folder 11 Portrait of Ethel Gertrude Armstrong, 1915


Box 272 Folder 12 Radio Pole at 1032 Warburton Ave and Old Aerials, undated (includes negatives), 1032, undated


Box 272 Folder 13 Smith, Estelle, Edith Rissie Armstrong, and Ethel Gertrude Armstrong,, undated


Box 272 Folder 14 "Uncle Bill Russell, Who Stimulated E.H. Armstrong as a Youngster in Radio,", undated


Box 272 Folder 15 Wedding Photograph of Ethel Armstrong Hammond, 1919 October 4


Box 272 Folder 16 Young Unidentified Children in Costume, undated


Box 272 Folder 17 Unidentified Individual [likely Armstrong, E.H.] Installing Top of Antenna on Radio Pole at 1032 Warburton Ave., undated, 1032, undated


Figures and Plots


Box 272 Folder 18 Comparison of FM Service Areas Available on 46 and 105 MC, undated (negatives only), undated


Box 272 Folder 19 Energy Polar Diagrams, undated (negatives only), undated


Box 272 Folder 20 Figures Demonstrating Effects of FM on Voltage Phase--From E.H. Armstrong's Technical Paper "Reducing Disturbances in Radio By Frequency Modulation," undated (negatives only), undated


Box 272 Folder 21 Figures From E.H. Armstrong and J. Bose--Technical Paper "Recent Developments in Multiplex Transmission," undated (negatives only), undated


Box 272 Folder 22 Figures Illustrating Plate Tuning For Transmitters and Receiver Units,, undated


Box 272 Folder 23 Figure Showing Distribution of Potential Along Filament, Filament Tuning and Plate Tuning Circuit, undated (negative only), undated


Box 272 Folder 24 FM radio--N.J. State Museum Exhibit Showing Early FM Tube Sent From E.H.Armstrong to Howard Schrader of Palmer Laboratories at Princeton University,, undated


Box 272 Folder 25 Frequency Allocations Between 40 and 129 Megacycles, undated (negative only), undated



Box 273 Folder 1-3 Oscillograms, 1916 (3 Folders, negatives only), 1916


Box 273 Folder 4 Oscillograms Demonstrating Regeneration, undated


Box 273 Folder 5 Plots of Tropospheric Wave Propagation, Ground Waves, Field Intensity, 1943-1944 (negatives only), 1943-1944


Box 273 Folder 6 Radar Plots, undated


Box 273 Folder 7 Signal Plots From Montoloking, NJ, Andalusia, Penna, and Deerfield Receiving Station, 1945, 1946, undated (negatives only ), 1945, 1946, undated


Box 273 Folder 8 Spectrograms Demonstrating Sidebands Taken on Panoramic Receiver, undated


FM Radio Stations


Box 273 Folder 9 Continental Network (Early FM) Dedication With E.H. Armstrong and Unidentified Person,, undated


Mount Washington Radio Station, New Hampshire


Box 273 Folder 10 Equipment Buildings and Surrounding Area, undated


Box 273 Folder 11 Exterior Views of Engineers At Work, undated


Box 273 Folder 12 Postcards, undated


Box 273 Folder 13 Rime Crystals On Radio Tower, 1940 August 24


Box 273 Folder 14 Mt. Holly Antennas and Mobile Setup In Vicinity For Field Strength Measurements, 1949 April 25-29 (includes negatives), 1949 April 25-29


Box 273 Folder 15 Pollock, Dale's Radio Setup, New London, Connecticut, undated


Box 273 Folder 16 Radio Diablo Transmitter and Station Atop Mount Diablo, California, 1948 (includes correspondence), 1948



Box 282 Folder 4 VP5PZ, Now ZQI-- Album--Includes Apparatus, Radio Aerial, and Unidentified Individuals,, undated


W1XOJ, Paxton, Massachusetts



Box 274 Folder 1 Apparatus, 1939-1940 (includes descriptions and correspondence), 1939-1940


Box 274 Folder 2 Exterior Views of Building and Antenna Towers, 1939-1940


Box 274 Folder 3 Unidentified Individuals, undated


W1XPW, Hartford, Connecticut


Box 274 Folder 4 Apparatus--Including Front and Rear Panels, 1940 August 20 (negatives only), 1940 August 20


Box 274 Folder 5 Radio Pole and Unidentified With Apparatus, 1939 January 15


W2AG, Yonkers, New York


Box 274 Folder 6 Apparatus, 1936 (includes negatives), 1936


Box 274 Folder 7 Modulator, undated


Box 274 Folder 8 W45CM, Columbus, Ohio-- Frank A.Gunther and Nafzger, undated


Box 274 Folder 9 W45D, Detroit, Michigan-- Dedication with E.H. Armstrong, Thomas E.Moore, and unidentified,, 1941 October 18


Box 274 Folder 10 W47A--Capitol Broadcasting Company, Inc.--Building and Building Site,, undated


Box 274 Folder 11 W65H--Billboard, undated


WDRC, Meriden, Connecticut


Box 274 Folder 12 Exterior Views of Building and Site, 1939


Box 274 Folder 13 Radio Equipment With Description, 1939


Box 274 Folder 14 Relay Equipment, 1946 January 21 (includes correspondence), 1946 January 21


Box 274 Folder 15 WMIT, Mount Mitchell, North Carolina--Tower, Building And WMIT Car, undated


WOR-FM, New York


Box 274 Folder 16 Armstrong, E.H. and C.R.Runyon, undated


Box 274 Folder 17 Armstrong, E.H. and Unidentified, undated


Germany


Box 274 Folder 18 Gravelly Point Strategic Bomb Survey of Bodensee, Meersburg, Lowenthal, and Mansdorf--Taken By Fred Hargesheimer Regarding Olga Wueschner,, undated


Box 274 Folder 19 Television Laboratory On Wheels--Sponsored By The German Post Office to Determine The Locations Where The Television Transmitters Of The Large Network to be Erected Were to be Situated,, undated


Box 274 Folder 20 Ultra Short Wave Transmitter--Titled The "World's Largest Ultra Short Wave Transmitter,"--These Two Transmitters Were Inaugurated in January 1936 After The Previous Ones Were Destroyed by Fire, undated, January 1936, undated


Haddonfield, New Jersey



Box 275 Folder 1 Armstrong Receiving Apparatus at the Home of Harry Sadenwater in Haddonfield, New Jersey, 1934-1935 (includes negatives), 1934-1935


Box 275 Folder 2 Early Antenna For FM Reception, 1934 June (includes negative), 1934 June


Box 275 Folder 3 Multiplex Receiving System, undated (includes negatives), undated


Box 275 Folder 4 Receiving Antenna--Demonstrating the Small Size of The Antenna Required For An Ultra Shortwave System, 1934-1935 (includes negatives), 1934-1935


Marcellus Hartley Laboratory, Columbia University


Box 275 Folder 5 Apparatus From Columbia University Photographic Section, undated (negatives only), undated


Box 275 Folder 6 Apparatus Regarding "No Frequency Shift With Plate Voltage?", undated


Box 275 Folder 7 Apparatus Used by E.H. Armstrong in Reception of Station WEAF--Special Experimental Unit Used with Regular Transmitting Unit at Bellmore, Long Island--Demonstration Made to Dr. W.R.G. Baker,, 1933 February 4


Box 275 Folder 8 Chassis Collection, undated


Box 275 Folder 9 Early Wide Band Photos, 1932-1933


Box 275 Folder 10 First Alpine Modulation Equipment On Test at Columbia, 1936


Box 275 Folder 11 Inside Cage View of First FM Transmitter, Northeast Room, Philosophy Hall,, 1932-1933


Box 275 Folder 12-16 Interior Views and Apparatus, 1925, 1927, 1930 (includes negatives), 1925, 1927, 1930, (5 Folders)



Box 276 Folder 1-10 Interior Views and Apparatus, 1931-1933, 1935-1936, 1931-1933, 1935-1936, (10 Folders)



Box 277 Folder 1-8 Interior Views and Apparatus, 1936-1939, 1943, undated, 1936-1939, 1943, undated, (7 Folders)


Box 277 Folder 9 Modulation Apparatus, undated


Box 277 Folder 10 Original FM Modulator and Power Amplifier Built For Use at Alpine, 1936 April 29


Box 277 Folder 11 Original Regenerative Circuit Apparatus Built By E.H. Armstrong, While a Student At Columbia University,, 1943 March


Box 277 Folder 12 Power Amplifier and Intermediate Power Amplifier of Frequency Modulation Transmitter, undated (includes negatives), undated



Box 278 Folder 1 Remains of War Chassis, undated (includes negatives), undated


Box 278 Folder 2 Signal Corps Job, 1943 December 1 (includes negatives), 1943 December 1


Box 278 Folder 3 "Special Equipment"--In 201 Philosophy, 1943 January 25 (includes negatives), 1943 January 25


Box 278 Folder 4 "Timing Of Waveform"--Rejector As Set Up During WWII, undated


Box 278 Folder 5 Unidentified Individuals, undated


Marconi Shack--Original


Box 278 Folder 6 Armstrong, E.H. In Front of the Shack, undated


Box 278 Folder 7 Armstrong, E.H. and Guglielmo Marconi In Front of Shack, Rocky Point, New York,, undated


Box 278 Folder 8 Armstrong, E.H. [and possibly Marion] In Front of Shack, Babylon, New York,, undated


Box 278 Folder 9 Armstrong, E.H. and Unidentified In Front of the Shack, Babylon, New York,, undated


Box 278 Folder 10 Moving The Shack Onto a Truck For Relocation to Rocky Point, Babylon, New York,, 1930


Box 278 Folder 11 Photos of the Building Before Purchase and Relocation by E.H.Armstrong to Babylon, New York, undated (includes negatives), undated


Box 278 Folder 12 Shack In Front of RCA Building, undated


Box 278 Folder 13 The Shack In Front of RCA's Transmitting Station, Building #1, Given as a Gift From E.H. Armstrong, Rocky Point, New York,, undated


Marconi, Guglielmo


Box 278 Folder 14 Captions of Photographs Sent to E.H. Armstrong in New York, 1953 September


Clifden, Ireland


Box 278 Folder 15 "Marconi Express" Peat Train, undated


Box 278 Folder 16 Marconi With His Engineers Including C.S. Franklin, Later to be the Designer of the S.W. Beam System, Standing at Extreme Left,, 1913


Box 278 Folder 17 Transatlantic Wireless Station, undated (includes correspondence), undated


Box 278 Folder 18 D.Station at Either Aberdeen or Flambora Head, undated


Box 278 Folder 19 Images From "Marconi Jubilee 1897-1947,", undated


Box 278 Folder 20 Images From "Wireless at Sea" By H.E. Hancock, Monument and English Royalty Near Poldhu Station,, undated


Box 278 Folder 21 Images From Wireless World by H.E. Hancock--Marconi at Signal Hill With Instruments,, undated


Box 278 Folder 22 Marconi's Diary For 1901 December 12-13, In Which He Recorded In Ink the Times of His Reception of the First Transatlantic Wireless Signals, undated, 1901 December, undated


Box 278 Folder 23 Marconi In The Room at Signal Hill, St. Johns, Newfoundland With Apparatus Used to Receive the First Transatlantic Wireless Signals in 1901 December, undated, 1901, undated



Box 282 Folder 5 Marconi Station at Siasconset, Nantucket, Massachusetts, undated



Box 278 Poldhu, Cornwall


Box 278 Folder 24 Exterior View In 1923, undated (negative only), 1923, undated


Box 278 Folder 25 Poldhu Wireless Station--Used For the First Transoceanic Service For Wireless Telegraphy,, undated


Box 278 Folder 26 Tonkin, Charles, William Gilbert, Edward Hodge, and James Exelby, of Mullion at Fiftieth Anniversary of the First Spanning of the Atlantic by wireless,, 1951 December 12


Box 278 Folder 27 Preparing the Kite Which Raised the Receiving Aerial at St. John's, Newfoundland With Which Marconi Received the First Transatlantic Wireless Signals in 1901, undated, 1901, undated



Box 282 Folder 6 Transatlantic High Power Marconi Station at Glace Bay, Nova Scotia, undated


Box 282 Folder 7 Transatlantic Station at South Wellfleet, Cape Cod, Massachusetts, undated


Notebooks



Box 278 Folder 28 Contains Military Photographs--Handwritten Note by Armstrong About his Grandfather's Cat--News Clippings,, undated


Box 278 Folder 29 Contains Wedding Notice of Emily Gertrude Smith to John Armstrong--Reception Notice From the Smiths--William West McIntosh Oration Note--News Clippings,, undated



Box 279 Folder 1-2 Scrapbook Belonging to Emily Gertrude Smith--Includes Derthick Farm, Howard's School Examination, Marriage Announcement, Howard's Completion of Credits for the Degree of Electrical Engineering, John Armstrong's Obituary, Pupin Announcement of Wireless Invention, Captain Edwin H. Armstrong, and News Clippings,, 1886-1901, (2 Folders)


Pupin, Michael I.


Box 279 Folder 3 Armstrong, E.H. Speaking at Funeral Service, undated


Box 279 Folder 4 Pupin Holding the John Fritz Medal and Dr. Edwin Wilbur Rice, Jr. Holding the Edison Medal Presented by the American Institute of Electrical Engineering,, 1931 January 27


Box 279 Folder 5 Early Laboratory Picture, undated (includes negative), undated


Box 279 Folder 6 Exterior View, Holding Papers, undated


Box 279 Folder 7 Postcard of Hemlock Farm, the Residence of M.I. Pupin, in Norfolk, Connecticut,, undated


Radio Club of America



Box 282 Folder 8 40th and 41st Annual Banquet, Advertising Club of N.Y., 1949, 1950, 1949, 1950


Box 282 Folder 12 Annual Banquets--Including Presentations of the Armstrong Medal to Harry W. Houck, J.V.L. Hogan, Charles S. Ballantine, and Henry J. Round, 1936-1939, 1941, 1947, 1949-1953, 1936-1939, 1941, 1947, 1949-1953


Box 282 Folder 13 Banquet--Hotel Ansonia, 1919 November 19


Box 282 Folder 9 Banquet Smoker Beefsteak Dinner, Brooklyn, New York, 1931 April 22


Box 282 Folder 14 Dinner for Captain Round, 1929 October 4



Box 279 Folder 8 Manuscript of Article From The Wireless Age accompanying Photograph of Banquet Given in Honor of Armstrong, E.H. on 1919 November 19, 1919 December, 1919 November, 1919 December


Box 279 Folder 9 Members at Dinner for Captain H.J. Round, New York, 1929 October 4


Box 279 Folder 10 Reprint of Proclamation Upon the Death of E.H. Armstrong, undated


Radio Engineering Labs (REL)



Box 280 Folder 1 Armstrong Modulator, undated


Box 280 Folder 2 FM Receiver, undated


Box 280 Folder 3 Production Plant and Equipment, undated


Box 280 Folder 4 Transmitter Equipment--Open Cabinet Views, undated


Box 280 Folder 5 Two Way Car Equipment, undated


R.C.A. Communications


Box 280 Folder 6 Long Wave Receivers at Riverhead, undated


Box 280 Folder 7 Radio Central Building Transmitters and Antennas, undated


Box 280 Folder 8 Short Wave Receivers and Rack, Riverhead, Long Island, undated


Box 280 Folder 9 Switchboard at RCAC Central Office, Broad St., New York, undated


Box 280 Folder 10 Transmitter Apparatus Used in Transoceanic Service, undated


Superheterodyne Receiver


Box 280 Folder 11 Experimental Wave Heterodyne Receiver Side View, Navy Yard, New York,, 1920 January 3


Box 280 Folder 12 First Superheterodyne Installed At the Seagate Station by the US Navy in 1918 1941 May 19, 1918, 1941 May 19


Box 280 Folder 13 First Superheterodyne Radio Receiver Developed in 1917, undated (includes correspondence), 1917, undated


Box 280 Folder 14 Interior Of the Original Receiver Built on the Second Harmonic Principle,, undated


Box 280 Folder 15 Portable Unit With Which an Inexperienced Woman Heard 2LO During the Tests Run by Radio Broadcast and Wireless World, undated (includes negative), undated


Box 280 Folder 16 Second Superheterodyne Radio Receiver Developed In 1922, undated, 1922, undated


Box 280 Folder 17 Six-Tube Receiver, undated (includes negative), undated


Box 280 Folder 18 Third Superheterodyne Radio Receiver With Five-Tube Layout and Loudspeaker,, undated


Box 280 Folder 19 US National Museum Exhibit With Regenerative and Superheterodyne Receivers,, 1955


Washington, D.C.


Box 280 Folder 20 Columbia University Professor E.H. Armstrong Explains New Radio Broadcast System to F.C.C.,, 1936 June 17


Box 280 Folder 21 Testifies Before the House Labor Committee, 1918 January 15


Westhampton, New York


Box 280 Folder 22 Armstrong Receiving Apparatus at Home of George Burghard, undated (includes negatives), undated


Box 280 Folder 23 Notarized Photos of Equipment With Notes--Armstrong vs. Hansell Interference,, 1937 September 20


Box 280 Folder 24 Receiving Apparatus, 1934 June (includes negative), 1934 June


Box 280 Folder 25 Receiving Apparatus, 1936 June


Box 280 Folder 26 Westhampton, Pre-Hurricane, undated (includes negatives), undated


Box 280 Folder 27 Westhampton Recorder Pictures by Fred Hargesheimer, 1947


World War I



Box 281 Folder 1 Armstrong, E.H. in Uniform With the Rank of Captain in the Signal Corps,, undated


Box 281 Folder 2 Major Armstrong in Uniform, undated (includes negative), undated


Signal Corps--France


Box 281 Folder 3 Armstrong, E.H. and Unidentified Individual in Airplane (Armstrong Developed First Airplane Radios During WWI),, undated


Box 281 Folder 4 Armstrong, E.H. Receiving Legion d'Honneur, 1919


Box 281 Folder 5 Group Photographs, undated


Box 281 Folder 6 Interior Views of Radio Apparatus, undated


Box 281 Folder 7 Major Armstrong and Professor Abraham, undated


Box 281 Folder 8 Major Armstrong, General Ferrié, and Professor Abraham of Sorbonne, [Hindenbreg] Chateau,, undated


Box 281 Folder 9 Tank Radio Apparatus, undated


Box 281 Folder 10 US Army Official Photos of Radio Apparatus, undated


Box 281 Folder 11 Swiss and French Mobilization


Yonkers, New York


Box 281 Folder 12 Armstrong, E.H. Visiting His Boyhood Bedroom Where In 1912 He Made the Discovery of Regeneration, 1947, 1912, 1947


Box 281 Folder 13 Billboard For United States Tires Mentioning E.H. Armstrong, 1921


Box 281 Folder 14 Dismantling of Radio Pole at 1032 Warburton Avenue--Includes correspondence from Bradley Hammond, 1935 August (includes negatives), 1032, 1935 August


Box 281 Folder 15 Re-Erection of Runyon tower At The Home of Frank A Gunther In Staten Island, New York, 1967 (includes correspondence), 1967


Box 281 Folder 16 Runyon Tower--E.H. Armstrong and Unidentified Individuals, 1946 January


Zenith Corporation


Box 281 Folder 17 FM Radio Assembly Line, undated


Box 281 Folder 18 FM Station W51C Studio--Office and Transmitting Apparatus, 1943 August 16


Lantern Slides


Alpine, NJ (duplicate)



Box 285 Folder 1-2 Armstrong, E.H. and Charley Fowler Wearing Homemade Ice Shields, 1941 January 18 (2 slides), 1941 January 18


Box 285 Folder 3-12 Armstrong, E.H. and Harry "The Rigger" Jorgenson on Turnstile Antenna, undated (9 slides), undated


Box 285 Folder 13 High Power Amplifier Shielded Behind Copper Screening, undated


Box 285 Folder 14-15 Osborn, Perry In the Control Room, 1941 September 29 (2 slides), 1941 September 29


Box 285 Folder 16 Pre-Construction Site, 1937 March 29


Box 285 Folder 17-30 Radio Tower--Including Air View, View of Base, View from Ground, View During Construction, undated (13 slides), undated


Box 285 Folder 31 W2XMN Building, undated


Box 285 Folder 32 Unidentified Individual on Radio Tower, undated


Apparatus


Box 285 Folder 33-49 Alpine, NJ--Including Early Model of Intermediate Stages, FM Apparatus, High Power Apparatus and Intermediate Power Stage Apparatus, undated (17 slides, duplicate), undated


Box 285 Folder 50 Antenna, undated


Box 285 Folder 51 Cables at Base of Pole, undated


Box 285 Folder 52-54 Empire State Building--Transmitters Installed by E.H.Armstrong, 1934-1935 (3 slides) (duplicate), 1934-1935


Box 285 Folder 55-61 Hartley Laboratory, undated (7 slides) (duplicate), undated


Box 285 Folder 62 [Regenerative Receiver Setup], undated


Box 285 Folder 63 [High Power Amplifier Stage], undated (duplicate), undated


Box 285 Folder 64-66 Predistortion, undated (3 slides), undated


Box 285 Folder 67 Radio Tower Antenna, undated


Box 285 Folder 68-73 Radio Set--Frank Eisemann FM, General Electric FM (duplicate)--Pilot FM and AM, Stromberg Carlson Console Radio, Zenith, undated (6 slides), undated


Box 285 Folder 74-76 Radio Set Including Headset and Microphone, undated (3 slides) (duplicate), undated



Box 286 Folder 1-15 REL--Frequency Modulation, undated (15 slides), undated


Box 286 Folder 16 Top of Radio Pole and Antenna, undated


Box 286 Folder 17-19 Westhampton, NY-- Armstrong Receiving Apparatus at the Home of George Burghard, undated (3 slides) (duplicate), undated


Box 286 Folder 20-23 Yonkers, NY-- W2AG, undated (4 slides) (duplicate), undated


Box 286 Folder 24-66 Unidentified, undated (43 slides), undated



Box 295 Glass Plate Negatives--4" x 5"


Box 295 Folder 1-2 Unidentified, undated (2 slides), undated



Box 287 Folder 1 Bull's Eye, undated


Box 287 Folder 2-21 Cartoons--Patent Lawyers, undated (20 slides), undated


Box 287 Folder 22 Color Image of Flower Vase , undated (duplicate), undated


Box 287 Folder 23-38 De Forest, Lee--Patent Application for Radio Signaling Systems, 1915 September 21 (16 slides), 1915 September 21


Box 287 Folder 39-41 Early Family and Childhood--"1032" Radio Pole, Early Radio Aerial, undated (3 slides) (duplicate), undated


Exhibit Showing Effect of Modern Static-Reducing Antenna


Box 287 Folder 42-43 Carnavon Signal at Riverhead, NY, 1926 April 27 (2 slides), 1926 April 27


Box 287 Folder 44-45 Recorder Tape Showing Diversity Effect, undated (2 slides), undated


Box 287 Folder 46-59 Exterior Views [Generator Plant], undated (14 slides), undated


Box 287 Folder 60 FCC-- Table of Sound-Video Reception (Which Appears Twice in 1945 Feburary 21 FCC Brief, Pages 15, 30), undated, 1945, undated


Figures


Box 287 Folder 61-68 Audion--Capacity Coupling, Circuit,Grid Current, Operating Characteristics, Wing Current, undated (8 slides), undated


Box 287 Folder 69-70 Block Diagram--Titled "Fig 1" and "Fig 2", undated (2 slides), undated



Box 288 Folder 1-6 Circuit Diagram-- Titled "Fig 1" through "Fig 4", undated (6 slides), undated


Box 288 Folder 7-8 Colpitta Circuit As Printed in the New York Herald Daily Hookup, 1924 March 22


Box 288 Folder 9 Energy Polar Diagram, undated


Box 288 Folder 10-33 "Frequency Modulation Signaling System," E.H. Armstrong Patent--Figures 2 through 14, 1940 December 17 (24 slides), 1940 December 17


Box 288 Folder 34 Percentage of Listening Hours During the Last Sunspot Cycle, undated


Plots


Box 288 Folder 35-36 Grid Current vs. Grid Voltage (2 slides)


Box 288 Folder 37 Hand-Drawn Sinusoid Showing Envelope, undated


Box 288 Folder 38-41 Hand-Drawn Block Diagram, undated (4 slides), undated


Box 288 Folder 42-44 Hand-Drawn Circuit Diagram, undated (3 slides), undated


Box 288 Folder 45-48 Percent Distortion R.M.S. of Correction Amplifier and Modulator (4 slides)


Box 288 Folder 49-50 Signal-Noise vs. Distance, 1939 September 25 (2 slides), 1939 September 25


Box 288 Folder 51-54 Square of A.C. Component of Telephone Current, undated (4 slides), undated


Box 288 Folder 55 Plaintiff's Exhibit--Antenna System at Poldhu, Cornwall in 1923, undated, 1923, undated


Box 288 Folder 56-59 Plate Tuning--Receiver Unit Tuning, Unit Transmitter, Distribution of Potential, Method of Keeping In Step a Two Unit Transmitter, undated (4 slides), undated


Box 288 Folder 60-72 Set of Lecture Slides--Experimental Setup, Cord and Tuning Fork, Circuit Diagram, Section of Cable, Plots, undated (13 slides), undated



Box 289 Folder 1-20 Slides Used With IRE Paper "Method of Reducing the Effect of Atmospheric Disturbances"--Figures 1 through 10, Circuit Drawings, 1927 October 5 (20 slides), 1927 October 5


Box 289 Folder 21-47 Slides Used With R.C.A. Paper "A Study of the Operating Characteristics of the Radio Detector and Its Place In Radio History"--Figures 1 through 19, A through D, Advertisement Featuring Seeley, 1948 (27 slides), 1948


Box 289 Folder 48-66 Slides Used with Technical Paper "A Method of Reducing Disturbances In Radio Signaling By a System of Frequency Modulation"--Figures 1 through 7, 1935 November 6 (19 slides) (includes original and final versions of figures), 1935 November 6



Box 290 Folder 1-43 Slides Used with Technical Paper "A Method of Reducing Disturbances In Radio Signaling By a System of Frequency Modulation"--Figures 8 through 34, 1935 November 6 (43 slides) (includes original and final versions of figures), 1935 November 6


Box 290 Folder 44-50 "The Super-Heterodyne"--Armstrong Paper Presented Before the IRE--Figures 2 through 6, 1924 (7 slides), 1924


Box 290 Folder 51 Radio Frequency Signaling Circuit, undated


Box 290 Folder 52-54 Relation Between EMF and Current-- +R -R, +R ) -R, +R=-R, undated (3 slides), undated


Box 290 Folder 55 Wave Propagation, undated


Box 290 Folder 56 Wave Intensity, undated


Box 290 Folder 57-62 Wireless Receiving System Patent 1,113,149--Inventor E.H. Armstrong--Figures 1 through 4, 1914 October 6 (6 slides), 1914 October 6


Box 290 Folder 63-74 "Some Recent Developments of Regenerative Receivers-- Armstrong Technical Paper--Figures 1 through 3,9 through 15, 1922 June 7 (12 slides), 1922 June 7



Box 291 Folder 1-5 Haddonfield, NJ-- Early Antenna for FM Reception, Receiving Antenna, 1934 June, 1934-1935 (5 slides) (duplicate), 1934, June, 1934-1935



Box 295 Folder 3-9 Hartley Laboratory-- Taken By J. Boldtman In the Presence of T.J. Styles, 1927-1933 (glass plate negatives--8"x11") (7 slides) (duplicate), 1927-1933



Box 291 Folder 6-7 Hartley Laboratory--Interior View, undated (2 slides) (duplicate), undated


Maps


Box 291 Folder 8-13 FM Broadcast Station Construction Permits Issued, Stations In Operation, Applications Filed But Not Yet Acted Upon by FCC,1941 March 15 (6 slides)


Box 291 Folder 14 Principal Radio Stations in New England and Road Map, 1940


Box 291 Folder 15 Alpine Tower Broadcasting Range, 1940 April 18


Box 291 Folder 16-17 Marconi Cape Cod Power Station-- Conical Antenna, undated (2 slides) (duplicate), undated


Box 291 Folder 18-19 Meeting Notes, 1935 November (2 slides), 1935 November


Box 291 Folder 20-21 New York Times Front Page--As Transmitted by Facsimile Over FM, As Published in Radio Today, 1936 April, 1934 November 24 (2 slides) (duplicate), 1934 November 24


Box 291 Folder 22-46 Oscilllograms--Regeneration, Station W2XMN Recorded at Andaulsia, Penna--Slides Marked 1 through 14, 1945 June 16, undated (25 slides), 1945 June, undated


Box 291 Folder 47-51 Palisades--View of the River, Unidentified, undated (5 slides, duplicate), undated


Box 291 Folder 52-53 PHILCO Radio Set Advertisement, 1941 (2 slides), 1941


Box 291 Folder 54-65 Pupin, Michael I--Lecture Slides 1 through 12, undated (12 slides), undated



Box 292 Folder 1-30 Pupin, Michael I--Lecture Slides 13 through 42, undated (30 slides), undated


Box 292 Folder 31 Radio Engineering Lab (REL)--Production Plant, undated (duplicate), undated


RCA (duplicate)


Box 292 Folder 32-36 Antennas at Radio Central, Apparatus, undated (5 slides), undated


Box 292 Folder 37-38 Alexandarson Alternator, undated (2 slides), undated


Box 292 Folder 39-42 Long Wave Towers and Receivers at Riverhead, undated (4 slides), undated


Box 292 Folder 43-46 Radio Central Building, undated (4 slides), undated


Box 292 Folder 47-48 Shortwave Receivers and Rack, Riverhead, Long Island, undated (2 slides), undated


Box 292 Folder 49-52 Switchboard at Central Office, Showing Foreign Stations, New York City, undated (4 slides), undated


Box 292 Folder 53-58 Transmitter Apparatus Used in Transoceanic Service, undated (6 slides), undated


Box 292 Folder 59-65 Radio Aerial--Including Unidentified House, undated (7 slides, duplicate), undated



Box 293 Folder 1-4 Radio Tower, undated (4 slides), undated


Box 293 Folder 5-13 San Bruno Point Wireless Station (9 slides)


Box 293 Folder 14-15 Schloemich and Von Bronk Patent--First Page, undated (2 slides), undated


Box 293 Folder 16-17 Solar Flares, undated (2 slides), undated


Superheterodyne (duplicate)


Box 293 Folder 18-29 Chassis, Four-Tube Layout With Loudspeaker, Original Receiver, Six-Tube Receiver, Interior View, Unidentified Man with Apparatus, undated (12 slides), undated



Box 295 Folder 10-15 First Version, Dismantled Receiver, Six-Tube Receiver with Speaker, undated (glass lantern slides, 8"x11", 6 slides), undated



Box 293 Folder 30-32 Tables-- London Television Voice Channel--Maximum and Minimum Field Strengths, Deerfield Receiving Station, undated (3 slides), undated


Box 293 Folder 33 Transmission Lines, undated


Box 293 Folder 34-37 View of Landscape, undated (4 slides), undated


Box 293 Folder 38-39 WWI--General Ferrie and Professor Abraham of the Sorbonne in France, undated (2 slides, duplicate), undated


Box 293 Folder 40-51 X-Radiograph--Coins, Feet, Hand, Lower Leg, Torso, undated (12 slides), undated


Yankee Network


Box 293 Folder 52-57 Mount Washington-- Engineer on Radio Pole, Inside of Antenna Coupling House and Coupling Equipment, Radio Pole, Building, Rime-Covered Radio Tower, undated (6 slides, duplicate), undated


Box 293 Folder 58-60 Radio Pole--Interior View of Apparatus, undated (2 slides), undated


Box 293 Folder 61-64 WDRC--Buildings and Radio Pole, 1939 (4 slides), 1939


Box 293 Folder 65-70 W1XOJ--Building, Car and Trailer, undated (6 slides), undated



Box 294 Folder 1-3 W1XOJ-- Radio Pole, undated (3 slides), undated


Box 294 Folder 4-5 W2XMN Building, Base of Alpine Radio Tower, undated (2 slides, duplicate), undated


W2XRA


Box 294 Folder 6 Radio Plots, 1945 July 28


Box 294 Folder 7 Comparison of FM Service Areas Available on 46 and 105 MC, undated


Box 294 Folder 8-9 Monthly Tabulation Sheet, 1945 August (2 slides), 1945 August


Box 294 Folder 10 W45CM--Gunther and Nafzger, undated (duplicate), undated


Box 294 Folder 11-13 WTMJ--Back of the Milwaukee Journal Radio Car, undated (3 slides), undated


Box 294 Folder 14-15 Yonkers, New York--"1032 Pole", undated (2 slides) (duplicate), undated


Box 294 Folder 16-35 Unidentified Individuals--With Apparatus, On Icy Radio Tower, Ski Slope, Radio Tower, Outside, In Shed, On Rime-Covered Radio Pole, In the Palisades, With Radio Apparatus, undated (20 slides), undated


Box 294 Folder 36 Unidentified Tangle of Wires, undated (duplicate), undated