Approximately 11,000 images collected by Thomas Norrell consisting of original photographic prints and photographic postcards, original film and glass plate negatives, and duplicate/copy photographic prints and negatives. The majority are external views of single locomotive engines of North American railroad and industrial companies. Images of international railroad company locomotives and of representative locomotives from various locomotive works and builders are also included. The collection contains a small number of subject-specific images covering such topics as train wrecks, funeral trains, experimental locomotives, miniature trains, and locomotives at the 1933 and 1939 World's Fairs.

The collection consists of approxiamtely 3,000 views of railroads, railroad equipment, stations, yards and employees. The emphasis is on American railroads, but the collection includes a few views of railroad subjects in Africa, Asia, Central and South America, Europe, Scandinavia and several island nations.

Papers of Uriah A. Boyden (1804-1879), a Boston civil and mechanical engineer and the inventor of the Boyden turbine. Materials include correspondence, notes, calculations, articles, notebooks, legal documents, financial documents, patents and patent assignments, design drawings, newspaper clippings, pamphlets, business cards, and a print of a daguerreotype.

The Cummings Structural Concrete Company Records consists primarily of correspondence and business records documenting Robert A. Cummings' firm, consulting work, and participation in professional associations, especially the American Society of Civil Engineers, 1892-1893, circa 1900-1939; technical data and publications on soils testing, 1900-1939;...

Collection includes historic photographs, slides and films on subjects relating to all aspects of the petroleum industry, including exploration, drilling, refineries, tankers, pipelines, automobiles, trucks, aviation, refueling, buildings, coal, gasification, plants, mining, surface mining, fields, land reclamation, coastal zone management, corporate public service, educational programs, crude oil, deepwater ports, and watercraft It also documents numerous products other than gasoline produced by the petroleum industry, such as propane, lubricants, heating oil, and plastics.

The personal papers of Charles Lang Freer, the industrialist and art collector who founded the Freer Gallery of Art. The papers include correspondence, diaries, art inventories, scrapbooks of clippings on James McNeil Whistler and other press clippings, and photographs.

The records document the development and use of Reddy Kilowatt, a cartoon figure trademark created in 1926 by Ashton B. Collins, Sr. More than 150 investor-owned electric utilities in the United States and at least twelve foreign countries licensed the use of the Reddy Kilowatt trademark. The records include a wide range of textual and visual materials and sound and moving image recordings.

The Thaddeus S. C. Lowe Family Photographs Collection contains material from the post-Civil War activities of aeronaut Thaddeus Sobieski Constantine Lowe, his wife, Leontine Augustine Gachon Lowe, and their family.

The collection documents in photographs, scrapbooks, notebooks, correspondence, stock ledgers, annual reports, and financial records, the evolution of the telegraph, the development of the Western Union Telegraph Company, and the beginning of the communications revolution. The collection materials describe both the history of the company and of the telegraph industry in general, particularly its importance to the development of the technology in the nineteenth and twentieth centuries. The collection is useful for researchers interested in the development of technology, economic history, and the impact of technology on American social and cultural life.

This collection documents, in correspondence, publications, forms, paperwork, drawings, newspaper clippings, diplomas and photographs, the operations and products of the Frick Company of Waynesboro, Pennsylvania, manufacturers of steam-powered engines (portable, stationary, and traction), sawmills, threshing machines, grain separators and other mechanized agricultural harvesting implements, refrigeration, mechanical cooling systems, and ice making plants, from its founding in 1852 through 1961.