Railroad Archives Online
- CollectionD0063 - Walter W. Ainsworth Collection
- Series005 - Pacific Coast Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3006 - Cabooses (Railroads)
- 17 more...
- ItemWWAPC0295 - Pacific Coast Railroad caboose number 55 at Seattle, Washington, circa 1950.
- ItemWWAPC0297 - Pacific Coast Railroad caboose number 56 at Black Diamond, Washington, circa 1950.
- ItemWWAPC0299 - Pacific Coast Railroad caboose number X1 at Renton, Washington in July 1968.
- ItemWWAPC0300 - Pacific Coast Railroad caboose number X1 at unknown, Washington, circa 1956.
- ItemWWAPC0564 - Pacific Coast Railroad caboose number X1 at Renton, Washington, circa 1965.
- ItemWWAPCN0104 - Pacific Coast Railroad caboose number 53 at Renton, Washington in 1946.
- ItemWWAPCN0172 - Pacific Coast Railroad freight train at Taylor, Washington in 1944.
- ItemWWAPCN0322 - Pacific Coast Railroad caboose number 53 near Maple Valley Washington, circa 1946.