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
- 98 more...
- ItemNPDepot0099 - Northern Pacific Depot at Butte, Montana, undated
- ItemNPDepot0100 - Northern Pacific Depot at Butte, Montana, undated
- ItemNPDepot0101 - Northern Pacific Depot at Butte, Montana, undated
- ItemNPDepot0102 - Northern Pacific Depot at Butte, Montana, 1995
- ItemNPDepot0103 - Northern Pacific Depot at Butte, Montana, 1995
- ItemNPDepot0104 - Northern Pacific Depot at Camp Lewis, Washington, 1929
- ItemNPDepot0105 - Northern Pacific Depot at Camp Lewis, Washington, 1929
- ItemNPDepot0106 - Northern Pacific Depot at Carrington, North Dakota, circa 1900
- ItemNPDepot0107 - Northern Pacific Depot at Carrington, North Dakota, 1970
- 554 more...