Railroad Archives Online
- CollectionD0011 - James M. Fredrickson Collection
- Series009 - Logging Railroads
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3010 - Miscellaneous
- ItemJMF11-09965.0 - Robert Gray Shingle Company Car Mover at Hoquiam, Washington in October 1974.
- ItemJMF11-10534.0 - Weyerhaeuser Company Trackmobile at Cosmopolis, Washington in October 1974.
- ItemJMF11-10535.0 - Weyerhaeuser Company Trackmobile at Cosmopolis, Washington in October 1974.
- ItemJMF11-10576.0 - White River Lumber Log Truck at Enumclaw, Washington in May, 1975.
- ItemJMF11-10603.0 - Unknown Horse Logging Operation, circa 1895.
- ItemJMF19-14267.0 - A logging spur pole and steam donkeys, circa 1900.
- ItemJMF19-14265.0 - A steam donkey being moved across a river in Lewis County, Washington, circa 1900.