Railroad Archives Online
- CollectionD0170a - Cascade Rail Foundation Walt Ainsworth Photograph Collection
- Series002 - Chicago, Milwaukee, St. Paul, and Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2001 - Railroads--Equipment and Supplies
- Subseries Level 3009 - Electric Locomotives
- ItemWWA-0056 - Milwaukee Road Class E-5 Number E39 boxcab electric set south of Seattle, Washington, undated.
- ItemWWA-0082 - Milwaukee Road Number E4 south of Seattle, Washington near Black River Junction, undated.
- ItemWWA-0093 - Milwaukee Road boxcab Number E-22 at Black River, Washington in 1963.
- ItemWWA-0344 - A Milwaukee Road boxcab locomotive set along the Yakima River in Washington, undated.
- ItemWWA-0346 - Milwaukee Road Number E-22 eastbound at Ellensburg, Washington in 1965.
- ItemWWA-0347 - Milwaukee Road Number E-50 at Ellensburg, Washington in 1971.
- ItemWWAMP1400 - Milwaukee Road electric locomotive Number 10253 at Easton, Washington in 1923.
- ItemWWAMP1407 - Milwaukee Road electric locomotive Number E-4, at Renton, Washington in 1948.
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