Materials at the Smithsonian
Smithsonian Institution Libraries, Trade Literature Collection
Pelton Water Wheel Collection, NMAH.AC.1093
Lombard Governor Company Records, NMAH.AC.1091
Niagara Falls Power Company Photographs, NMAH.AC.0949
J. & W. Jolly Company Records, NMAH.AC.1009
Uriah Boyden Papers, NMAH.AC.0982
William R. Hutton Papers, NMAH.AC.0987
Warshaw Collection of Business Americana, Series: Waterworks
Materials at Other Organizations
Special Collections and Archives, University Libraries, Wright State University, Dayton, Ohio
James Leffel & Company Records, 1867-1971
The James Leffel and Company Records consist of ledgers, journals, order books, inventories, cash and day books, payroll files, correspondence, photographs, publications, and scrapbooks of a late 19th and early 20th century Springfield, Ohio manufacturer of turbines, water wheels and engines.
Ohio Historical Society, Columbus, Ohio
James Leffel and Company Records, 1845-1890
Records of water-wheel company of Springfield, Ohio including a letter press book, notebook of hydraulic tables, and patents for water wheels and cooking stoves.