The Snow Melter - A Street Cleaning Machine, 1891-1911
Box 30
Correspondence, 1895-1911
Box 30
Documents and manuscripts
Box 30
Drawings and blueprints
Box 30
Photographs and photoengraving block
Box 30
Printed materials
Mapcase 14-M-6
Drawings and blueprints
New York & Brooklyn Economic Power and Construction Company, 1893-1901
Box 31
The Pneumatic Co.--Stencil cutting machines, etc., 1893-1904
Correspondence, contracts, patents, and other documents, and printed materials
Box 31
The Philippines Company--Shipping, 1899
Documents and printed materials
Hinge making machines, 1902-1912
Box 32
Correspondence
Box 32
Contracts and documents
Box 32
Patent documents
Box 32
Patent drawings
Box 32
Printed materials
Box 32
Rack cutting apparatus, 1903-1905
Correspondence, contracts, and patents
Old age pension plan--Sale of annuities (Iron & Steel Board of Trade), 1911-1917
Box 33
Correspondence
Box 33
Manuscripts and documents
Box 33
Printed materials
Food Committee - A planned co-operative purchasing company, 1912-1913
Box 33
Correspondence, 1912-1921
Box 33
Documents, manuscripts, and printed materials
Fabricated Concrete Corporation--Cinderblock houses, 1918-1923
Box 33
Correspondence, 1920-19123
Box 33
Concrete boat hulls
Box 33
Manuscripts and documents, 1918-1923
Box 33
Printed materials
Box 33
Technical drawings and blueprints
Sunlight Gas Machine Co., Inc.--Gas lighting, 1918-1923
Box 34
Correspondence, 1920-1923
Box 34
Manuscripts and documents, 1918-1922
Box 34
Printed materials
Box 34
Timber mill and timber land sales--Land in the southern states, 1919-1920
Correspondence and documents
Box 34
Public transit reorganization--New York City, 1921
Correspondence, manuscripts, and documents