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A collection of notes, typescripts, and photostats relating mainly to the researches of Professor Arthur Christy on an index of Thoreau's reading and Thoreau's unpublished "Indian notes" "Index rerum" and "Fact book.".

Artistic, historic, and commercial lithographs arranged in chronological order to show the development of lithographic printing in Germany, France, Great Britain, and the United States. The collection, acquired by the Fuchs & Lang Manufacturing Co., is comprised of examples of the work of every major 19th century lithographer and lithographic printer, including Senefelder, Hullmandel, Lemercier, and Currier & Ives. The lithographs are arranged according to the numbers in the catalogs published by the company. This chronological sequence is supplemented by indexes to the lithographers and lithographic printers. Unidentified prints are arranged at the end of the collection by country, printer, or publisher

Correspondence, reports, memoranda, case records, photographs and printed material. The archive include central and district administrative records; cammittee correspondence and minutes; and files on the various programs--such as sheltered workshops, tuberculosis sanitariums and health centers, public baths and employment bureaus--run by the two organizations. The archive also contains hundreds of photographs, including works by Lewis Hine and Jessie Tarbox Beals; extensive casework files from the beginning of social work (originally referred to as "friendly visiting among the poor"); and copies of masters and doctoral theses from the New York School of Sociel Work and other schools. Much of the research for these theses was based on the CSS files

Files of the Congressional Vote Analysis and Allied Work Phases were stored at Columbia by the WPA at the termination of the Historical Record Survey. The material was listed in inventory form. This collection was sent to the University of Michigan so that its contents could be transferred into a computer data storage system. The files of roll-call votes and summaries of their contents are now available on magnetic tape. The files of approximately 20,000 maps, the correspondence files, and the research files are now housed at the National Archives in Washington. Columbia now retains only the card index to the collection.

Manuscript materials which include correspondence, business papers, composition scrapbooks and musical scores; books; clippings; records; and photographs.

Personal and professional papers of Stedman, including correspondence, letter books, diaries, poetry manuscripts, scrapbooks, photographs, and genealogical materials for the Stedman and Dodge families. Correspondence and manuscripts of his mother, Elizabeth Clementine Dodge Stedman Kinney (1810-1889), poet and diarist, and of his granddaughter, Laura Stedman Gould (1881-1941), author and editor. Also, editions of Stedman's LIBRARY OF AMERICAN LITERATURE including printed materials relating to the marketing; and an album of Civil War photographs by Mathew Brady, inscribed by the photographer to Laura H.W. Stedman as well as additional loose photographs by Brady.

The diary is a detailed account of Abbott's trip from Sydney, Australia to the Philippines, Hong Kong, Macao, China and Japan. There are numerous pen-and-ink sketches of landscape, architecture, historical sites, and inhabitants, and maps, some in water color. Pasted in the volume are memorabilia such as menus, hotel brochures, postcards, photographs, clippings, calling cards, etc. Of special interest are his accounts of the various native Christian communities he visited. Following the text there is a name index. In addition to the volume there are some related letters, documents, memorabilia and published maps.

Professional and personal files including Armstrong's correspondence with professional associations, other engineers, and friends, his research notes, circuit diagrams, lectures, articles, legal papers, and other related materials. Of his many inventions and developments, the most important are: 1) the regenerative or feedback circuit, 1912, the first amplified radio reception, 2) the superheterodyne circuit, 1918, the basis of modern radio and radar, 3) superregeneration, 1922, a very simple, high-power receiver now used in emergency mobile service, and 4) frequency modulation - FM, 1933, static-free radio reception of high fidelity. More than half the files concern his many lawsuits, primarily with Radio Corporation of America, over infringement of the Armstrong patents. Litigation continued until 1967. Other files deal with his work in the Marcellus Hartley Research Laboratory at Columbia University, 1913-1935, and with the American Expeditionary Forces in France during World War I, his Air Force contracts for communications development, Army research during World War II, the Radio Club of America, the Institute of Radio Engineers, FM development at his radio station at Alpine, N.J., the use of FM in television, his involvement in Federal Communications Commission hearings and legislation, and his work with the Zenith Radio Corporation. Also, letters to H.J. Round