Kern Dental Equipment Collection
Kern, George Robert, Jr., 1919-1987
Blueprints, drawings, patent applications, patents, product photographs, correspondence, bills and receipts, advertising, and published articles related to the Kerns' products. The bulk of the material, 1949-1958, is from George Kern's files. It primarily relates to the development and marketing of the Dentagraph and high speed dental drills before the formation of the Fairfax Manufacturing Company in 1957.
William J. Hammer Collection
Original documents and papers generated by William J. Hammer and by various companies and individuals with whom he was associated. Includes material related to the research and inventions of Edison, Bell, Tesla, the Curies, etc.
Coxe Brothers Collection
National Museum of American History (U.S.). Division of History of Technology
National Museum of American History (U.S.). Division of Work and Industry
National Museum of American History (U.S.). Division of Extractive Industries
Collection documents the Coxe Brothers and Company Inc., an anthracite coal producer in Pennsylvania.
The engineering firm that became Lockwood Greene was founded by David Whitman, a mill engineer, in 1832. Amos D. Lockwood, a consultant, succeeded Whitman and entered a partnership with Stephen Greene in 1882. The firm specialized in industrial engineering and construction; they designed and built a wide variety of structures and work environments worldwide over the next century. Lockwood Greene was acquired by CH2M HILL in December, 2003. Before its acquisition by CH2MHILL it was reportedly the oldest industrial engineering, construction, and professional services firm in the United States.