Railroad Archives Online
- CollectionD0335.2 - Northern Pacific Railway Historical Association Depot Photograph Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroads--Buildings and Structures
- Subseries Level 3002 - Depots and Freighthouses
- 449 more...
- ItemNPDepot0450 - Northern Pacific Depot at Portland, Oregon, circa 1910
- ItemNPDepot0451 - Northern Pacific Depot at Portland, Oregon, circa 2000
- ItemNPDepot0452 - Northern Pacific Depot at Portland, Oregon, circa 1880
- ItemNPDepot0453 - Northern Pacific Depot at Prosser, Washington, undated
- ItemNPDepot0454 - Northern Pacific Depot at Pullman, Washington, circa 1900
- ItemNPDepot0455 - Northern Pacific Depot at Pullman, Washington, 1917
- ItemNPDepot0456 - Northern Pacific Depot at Puyallup, Washington, circa 1880
- ItemNPDepot0457 - Northern Pacific Depot at Puyallup, Washington, circa 1970
- ItemNPDepot0458 - Northern Pacific Depot at Rainier, Washington, circa 1910
- 203 more...