Railroad Archives Online
- CollectionD0063 - Walter W. Ainsworth Collection
- Series005 - Pacific Coast Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2004 - Railroad tracks
- Subseries Level 3003 - Railroad yards
- ItemWWAPC0327 - Pacific Coast Railroad Stacy Street yard office at Seattle, Washington in 1968.
- ItemWWAPC0328 - Pacific Coast Railroad Stacy Street yard office at Seattle, Washington in 1968.
- ItemWWAPC0346 - Pacific Coast Railroad/Chicago Milwaukee St. Paul and Pacific Railroad yard at Black River Junction, Washington in 1944.
- ItemWWAPC0455 - Pacific Coast Railroad yard at Black Diamond, Washington in 1945.
- ItemWWAPC0456 - Pacific Coast Railroad yard at Black Diamond, Washington in 1945.
- ItemWWAPC0463 - Pacific Coast Railroad yard and coal facility at Black Diamond, Washington, circa 1955.
- ItemWWAPC0588 - Stacy Street yard in Seattle, Washington, circa 1965.
- ItemWWAPC0312 - Columbia and Puget Sound Railroad yard at Seattle, Washington, circa 1912.