Railroad Archives Online
- FondoD0063 - Walter W. Ainsworth Collection
- Serie002 - Chicago, Milwaukee, St. Paul, and Pacific Railroad Company
- Subserie014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 001 - Steam Locomotives
- Unidad documental simpleWWAPC0348 - Chicago, Milwaukee, St. Paul and Pacific Railroad steam locomotive number 684 at Black River Junction, Washington in 1944.
- Unidad documental simpleWWAPC0368 - Chicago, Milwaukee, St. Paul and Pacific Railroad steam locomotive number 726 at Renton, Washington in 1947.
- Unidad documental simpleWWAPC0402 - Chicago Milwaukee St. Paul and Pacific Railroad steam locomotive number 51 at Renton, Washington, circa 1947.
- Unidad documental simpleWWAPC0437 - Chicago Milwaukee St. Paul and Pacific Railroad locomotives at Maple Valley, Washington, circa 1950.
- Unidad documental simpleWWAMP0065 - Milwaukee Road Number steam locomotive Number 53 at Tacoma, Washington in 1948.
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