Railroad Archives Online
- CollectionD0063 - Walter W. Ainsworth Collection
- Series002 - Chicago, Milwaukee, St. Paul, and Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3004 - Railroad Passenger Cars
- ItemWWAPC0341 - Chicago, Milwaukee, St. Paul and Pacific Railroad passenger train number 16, Olympian Hiawatha, at Allentown, Washington in 1953.
- ItemWWAPC0343 - Chicago, Milwaukee, St. Paul and Pacific Railroad passenger train number 16, Olympian Hiawatha, at Seattle, Washington in 1957.
- ItemWWAPC0349 - Chicago, Milwaukee, St. Paul and Pacific Railroad passenger train number 15, Olympian Hiawatha, at Renton, Washington in 1953.
- ItemWWAPC0352 - Chicago, Milwaukee, St. Paul and Pacific Railroad passenger train number 15, the Olympian, at Renton, Washington in 1947.
- ItemWWAPC0371 - Chicago, Milwaukee, St. Paul and Pacific Railroad passenger train number 17, the Columbian, at Renton, Washington, circa 1920.
- ItemWWAPC0391 - Milwaukee Road passenger train number 15, the Olympian, at Renton, Washington in 1944.
- ItemWWAPC0421 - Chicago Milwaukee St. Paul and Pacific Railroad passenger train at Maple Valley, Washington, circa 1939.
- ItemWWAPC0427 - Chicago Milwaukee St. Paul and Pacific Railroad passenger train at Maple Valley, Washington in 1947.
- 3 more...