Railroad Archives Online
- CollectionD0011 - James M. Fredrickson Collection
- Series010 - Other Railroads
- Subseries Level 1014 - Photographs
- Subseries Level 2004 - Railroad tracks
- Subseries Level 3001 - Railroad mainline
- ItemJMF19-14251.0 - Denver & Rio Grande Western Railroad switch at Castle Crag, Utah, circa 1890.
- ItemJMF24-15104.0 - Puget Sound Electric (PSE) track flooded in the White River Valley at Auburn, Washington, circa 1917
- ItemJMF11-09880.0 - Curtis Millburn & Eastern Track Construction in September 1975.
- ItemJMF11-09880.1 - Curtis Millburn & Eastern Track Construction in September 1975.