Railroad Archives Online
- FondoD0142 - Alden M. Raney Collection
- Serie002 - Chicago, Milwaukee, and St. Paul Railway Company materials
- Sottoserie014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 009 - Electric Locomotives
- Unità documentariaAMR-338 - Milwaukee Road electric locomotive E81 at Butte, Montana in 1964.
- Unità documentariaAMR-339 - Milwaukee Road electric locomotive E49A at Butte, Montana in 1964.
- Unità documentariaAMR-359 - Milwaukee Road electric locomotive E49A at Butte, Montana in 1964.
- Unità documentariaAMR-360 - Milwaukee Road electric locomotive E49A at Butte, Montana in 1964.
- Unità documentariaAMR-361 - Milwaukee Road electric locomotive E49A at Butte, Montana in 1964.
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