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
- 4 more...
- 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.
- ItemWWAPC0428 - Chicago, Milwaukee, St. Paul and Pacific Railroad passenger train number 16, Olympian Hiawatha, at Maple Valley, Washington in 1947.
- ItemWWAPC0438 - Chicago Milwaukee St. Paul and Pacific Railroad passenger train number 16, Olympian Hiawatha, at Maple Valley, Washington in 1947.
- ItemCRF_Ainsworth111 - The eastbound Olympian Hiawatha departs Cle Elum, Washington in 1961.