Railroad Archives Online
- CollectionD0335.2 - Northern Pacific Railway Historical Association Depot Photograph Collection
- Seriesex: 001 - Northern Pacific Railroad Company
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroads--Buildings and Structures
- Subseries Level 3002 - Depots and Freighthouses
- 445 more...
- ItemNPDepot0446 - The Northern Pacific Depot at Pingree, North Dakota, undated
- ItemNPDepot0447 - The Northern Pacific Depot at Pingree, North Dakota, undated
- ItemNPDepot0448 - The Northern Pacific Depot at Pingree, North Dakota, 1972
- ItemNPDepot0449 - The Northern Pacific Depot at Pingree, North Dakota, 1982
- ItemNPDepot0450 - The Northern Pacific Depot at Portland, Oregon, circa 1910
- ItemNPDepot0451 - The Northern Pacific Depot at Portland, Oregon, circa 2000
- ItemNPDepot0452 - The Northern Pacific Depot at Portland, Oregon, circa 1880
- ItemNPDepot0453 - The Northern Pacific Depot at Prosser, Washington, undated
- ItemNPDepot0454 - The Northern Pacific Depot at Pullman, Washington, circa 1900
- 207 more...