Railroad Archives Online
- FondsD0027 - Timothy Miller Collection
- Série004 - Northern Pacific Railroad Company
- Sous-série009 - Engineering Records
- 008 - Physical plant drawing
- 003 - Maintenance Facilities
- 177 en plus...
- PièceStruc000516 - Northern Pacific Engineering Drawing, Unnamed Structure at Spokane, Washington, 1984
- PièceStruc000517 - Northern Pacific Engineering Drawing, at Spokane, Washington, 1984
- PièceStruc000518 - Northern Pacific Engineering Drawing, Unnamed Structure at Spokane, Washington, 1984
- PièceStruc000519 - Northern Pacific Engineering Drawing, Unnamed Structure at Spokane, Washington, 1984
- PièceStruc000520 - Northern Pacific Engineering Drawing, at Spokane, Washington, 1985
- PièceStruc000521 - Northern Pacific Engineering Drawing, at Spokane, Washington, 1985
- PièceStruc000522 - Northern Pacific Engineering Drawing, at Spokane, Washington, 1984
- PièceStruc000523 - Northern Pacific Engineering Drawing, at Spokane, Washington, 1984
- PièceStruc000524 - Northern Pacific Engineering Drawing, at Spokane, Washington, 1985
- 1125 en plus...