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 3003 - Freight Cars
- ItemWWAPC0351 - Chicago, Milwaukee, St. Paul and Pacific Railroad freight train at Renton, Washington in December 1944.
- ItemWWA-0376 - Milwaukee Road Ice Car 79031 and Boxcab E25 at Beverly, Washington in 1968.