Record of 25th Anniversary Celebration, Electro-Motive Division - General Motors Corporation October 24, 25, 25, 1947
Booklet entitled "Commemorating the Leadership of Harold L. Hamilton in the successful Application of the Internal Combustion Engine to the Propulsion of Mainline Trains on American Railroads" 1956
Booklet entitled "The Elmer A. Sperry Award for 1957" 1957
Color print of "World's Most Powerful Diesel Locomotive --- Union Pacific's 6900 Centennial Locomotive" undated
Color print of "'Big Boy,' The World's Largest Steam Locomotive" undated