Railroad Archives Online
- FonsD0011 - James M. Fredrickson Collection
- Sèrie009 - Logging Railroads
- Subsèrie014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 010 - Miscellaneous
- Unitat documental simpleJMF11-09965.0 - Robert Gray Shingle Company Car Mover at Hoquiam, Washington in October 1974.
- Unitat documental simpleJMF11-10534.0 - Weyerhaeuser Company Trackmobile at Cosmopolis, Washington in October 1974.
- Unitat documental simpleJMF11-10535.0 - Weyerhaeuser Company Trackmobile at Cosmopolis, Washington in October 1974.
- Unitat documental simpleJMF11-10576.0 - White River Lumber Log Truck at Enumclaw, Washington in May, 1975.
- Unitat documental simpleJMF11-10603.0 - Unknown Horse Logging Operation, circa 1895.
- Unitat documental simpleJMF19-14267.0 - A logging spur pole and steam donkeys, circa 1900.
- Unitat documental simpleJMF19-14265.0 - A steam donkey being moved across a river in Lewis County, Washington, circa 1900.