Railroad Archives Online
- FondoD0142 - Alden M. Raney Collection
- Serie010 - Other Railroads
- Sottoserie014 - Photographs
- 004 - Railroad tracks
- 003 - Railroad yards
- Unità documentariaAMR-676 - Portland Terminal Railroad tie tamper at Portland, Oregon in 1984.
- Unità documentariaAMR-677 - Portland Terminal Railroad tie tamper at Portland, Oregon in 1984.
- Unità documentariaAMR-678 - Portland Terminal Railroad tie tamper at Portland, Oregon in 1984.