Railroad Archives Online
- FondD0197 - Maple Valley Historical Society Collection
- Sorozat004 - Pacific Coast Railroad Company
- Alsorozat014 - Photographs
- 004 - Railroad tracks
- 001 - Railroad mainline
- IratdarabP2000.06.01-033 - Pacific Coast Railroad track at Maple Valley, Washington, circa 1955.
- IratdarabP2000.06.02-034 - Pacific Coast Railroad track at Maple Valley, Washington, circa 1955.
- IratdarabP2008.05.16-040 - Pacific Coast Railroad track at Maple Valley, Washington, circa 1955.
- IratdarabP2015.06.34-067 - Pacific Coast Railroad railroad track at Renton, Washington in 1945.