Great Britain. Patent Office.
Evans, Oliver
United States. Bureau of Labor Statistics.
Elieser S. Posner
Amos, Percy A.
Minnesota Historical Society
Oliver Evans
William Halliwell
William C. Edgar
Association of Operative Millers.
William Carter Hughes
William Crowell Edgar
Henry Pallett
Andrew Millar
Edward Bradfield
Canada. Industry, Science and Technology Canada.
Percy A Amos
R. Thurston Hopkins
Adam Lucas