Collected Materials, 1960-1986. 2.6 linear feet. . Collection of steam traction engine memorabilia, including postcards, photographs, and publications, assembled by Howard A. Healey, a resident of Muscatine, Iowa. Law firm formed by two brothers, Arthur and B. F. Thomas, in 1909 in Traer, Iowa. In 1914 the Cizek Brothers Manufacturing Company employed Thomas and Thomas to sell an invention developed by the company, a grain unloading device used with a portable elevator adapted to convey grain to a crib or storage facility.
Collection contains correspondence, sketches, and papers relating to the invention.
40 linear feet. Agricultural engineer and safety expert. Norval J. Wardle received a B.S. in agriculture from the University of Idaho in 1937, an M.S. from Idaho in 1946, and a Ph.D. in agricultural engineering from Iowa State University in 1949. He taught agricultural engineering at Iowa State from 1945 to 1970. In 1947, J. B. Davidson, longtime head of the Agricultural Engineering Department, convinced Iowa State to establish a new position of agricultural safety engineer.