Finding aids (40) Images (19) Electronic resource (1)

Archival materials (40) Collection descriptions (40) Photographs (17) Correspondence (12) Drawings (10) Clippings (9) Business records (8) Manuscripts (8) Reports (8) Black-and-white photographs (6) Motion pictures (visual works) (6) Patents (6) Audiotapes (5) Brochures (5) Contracts (5) Legal documents (5) Blueprints (4) Newsletters (4) Advertisements (3) Articles (3) Business ephemera (3) Ephemera (3) Film reels (3) Illustrations (3) Manuals (3) Photograph albums (3) Publications (3) Slides (photographs) (3) Sound recordings (3) Specifications (3) Trade catalogs (3)

Railroads (4) Bridges (3) Dams (3) Engineering (3) Museum exhibits (3) Science (3) Subways (3) Transportation (3) Tunnels (3) Waterways (3) World War, 1939-1945 (3) Aeronautics (2) Civil engineering (2) Concrete construction (2) Diesel engines (2) Flags (2) Harbors (2) Hydraulic engineering (2) Industrial engineering (2) Industrial films (2) Inventors (2) Museum curators (2) Painters (2) Pumping machinery (2) Shipbuilding industry (2) Steam-engines (2) Trade associations (2) Turbines (2) Water transfer (2) Wharves (2) Aeronautical engineers (1)

National Museum of American History (U.S.). Division of Mechanical and Civil Engineering (5) National Museum of American History (U.S.). Division of History of Technology (4) Warshaw, Isadore (3) National Museum of American History (U.S.). Division of Work and Industry (2) A.O. Smith Company (1) Aji-no-moto Corporation (1) Albert Trostel and Sons (1) Aluminum Goods Manufacturing Comp (1) American Artists' Congress (1) American Colortype Company (1) American Institute of Industrial Engineers (1) American Petroleum Institute. (1) American Society of Civil Engineers. (1) American Stereoscopic Co. (1) Appell, George N. (1) Arensberg, Conrad M. (Conrad Maynadier) (1) Arthur Lodge Productions. (1) Artists League of America (1) Artists' Union (New York, N.Y.) (1) Asian Productivity organization (1) Barbar and Coleman (1) Baskin, Leonard (1) Beatty, John (1) Bell Telephone Laboratories (1) Belvedere, DeKalb, and Southern Railway (1) Boulton, Laura (1) Boyesen, Bayard (1) Bridgestone (1) Briggs & Stratton Corporation (1) Brooklyn College (1) Buffalo China Company (1)

Bantu-speaking peoples (1) Dogon (African people) (1) Irish (1) Mandingo (African people) (1) Ovambo (African people) (1) Songhai (African people) (1) Toda (Indic people) (1) Tuaregs (1) Zulu (African people) (1)

New York (N.Y.) (3) Boston (Mass.) (2) Europe (2) Hudson River (2) Africa (1) Asia (1) Brooklyn Bridge (New York, N.Y.) (1) Buffalo (N.Y.) (1) Cambridge (Mass.) (1) Chicago (Ill.) (1) Cincinnati (Ohio) (1) Columbus (Neb.) (1) Death Valley (1) Detroit (Mich.) (1) England (1) Essex (Conn.) (1) Fremont (Neb.) (1) Greece (1) Hannibal (Mo.) (1) Hazelton (Penn.) (1) Holyoke (Mass.) (1) India (1) Ireland (1) Italy (1) London (1) Maison Carree (Nimes, France) (1) Monticello Va. (1) Nepal (1) New England (1) New York (1) North America (1)

Archives Center, National Museum of American History (22) Smithsonian Institution Archives (9) Archives of American Art (2) Human Studies Film Archives (2) National Air and Space Museum Archives (2) Archives of American Gardens (1) National Anthropological Archives (1) Ralph Rinzler Folklife Archives and Collections (1)