Railroad Archives Online
- FondsD0063 - Walter W. Ainsworth Collection
- Serie002 - Chicago, Milwaukee, St. Paul, and Pacific Railroad Company
- Teilserie014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 009 - Electric Locomotives
- ObjektWWAPC0367 - Chicago, Milwaukee, St. Paul and Pacific Railroad electric locomotive at Renton, Washington, circa 1920.
- ObjektWWAPC0340 - Chicago, Milwaukee, St. Paul and Pacific Railroad freight train at Allentown, Washington in 1949.
- ObjektWWAPC0426 - Chicago Milwaukee St. Paul and Pacific Railroad freight train at Maple Valley, Washington in 1944.
- ObjektWWA-0056 - Milwaukee Road Class E-5 Number E39 boxcab electric set south of Seattle, Washington, undated.
- ObjektWWA-0082 - Milwaukee Road Number E4 south of Seattle, Washington near Black River Junction, undated.
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