Railroad Archives Online
- FondsD0027 - Timothy Miller Collection
- Série004 - Northern Pacific Railroad Company
- Sous-série009 - Engineering Records
- 008 - Physical plant drawing
- 002 - Depots and Freighthouses
- 657 en plus...
- PièceStruc005491 - Northern Pacific Engineering Drawing, Boilers for Northern Pacific Terminal Company at Portland, Oregon, 1963
- PièceStruc005492 - Northern Pacific Engineering Drawing, Boilers for Northern Pacific Terminal Company at Portland, Oregon, 1963
- PièceStruc005493 - Northern Pacific Engineering Drawing, Boilers for Northern Pacific Terminal Company at Portland, Oregon, 1963
- PièceStruc005494 - Northern Pacific Engineering Drawing, Boilers for Northern Pacific Terminal Company at Portland, Oregon, 1963
- PièceStruc005495 - Northern Pacific Engineering Drawing, Depot at Enumclaw, Washington, 1965
- PièceStruc005496 - Northern Pacific Engineering Drawing, Depot at Enumclaw, Washington, 1964
- PièceStruc005497 - Northern Pacific Engineering Drawing, Depot at Enumclaw, Washington, 1964
- PièceStruc005503 - Northern Pacific Engineering Drawing, Freight House at Missoula, Montana, 1948
- PièceStruc005504 - Northern Pacific Engineering Drawing, Freight House at Missoula, Montana, 1948
- 996 en plus...