Railroad Archives Online
- CollectionD0063 - Walter W. Ainsworth Collection
- Series005 - Pacific Coast Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2004 - Railroad tracks
- Subseries Level 3001 - Railroad mainline
- 18 more...
- ItemWWAPC0509 - Pacific Coast Railroad rail at unknown, Washington, circa 2015.
- ItemWWAPC0596 - Railroad mainlines at south Seattle, Washington in 1927.
- ItemWWAPC0598 - Pacific Coast Railroad railroad track at Argo, Washington, circa 1915.
- ItemWWAPC0600 - Railroad mainlines at south Seattle, Washington in 1927.
- ItemWWAPC0703 - Site of Pacific Coast Railroad mainline at Maple Valley, circa 1996.
- ItemWWAPCN0161 - Pacific Coast Railroad railroad track at Maple Valley, Washington, circa 1982.
- ItemWWAPCN0177 - Pacific Coast Railroad railroad track at Argo, Washington, circa 1940.
- ItemWWAPCN0191 - Pacific Coast Railroad/Chicago Milwaukee St. Paul and Pacific Railroad mainline at Renton, Washington in 1944.