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
- 13 more...
- ItemNPDepot0014 - Northern Pacific Depot at Arlington, Washington, circa 1970
- ItemNPDepot0015 - Northern Pacific Depot at Arlington, Washington, 2007
- ItemNPDepot0016 - Northern Pacific Depot at Arlington, Washington, 2007
- ItemNPDepot0017 - Northern Pacific Depot at Arlington, Washington, 2007
- ItemNPDepot0018 - Northern Pacific Depot at Armstead, Montana, 1907
- ItemNPDepot0019 - Northern Pacific Depot at Arrow, Idaho, circa 1950
- ItemNPDepot0020 - Northern Pacific Depot at Ashland, Wisconsin, circa 1910
- ItemNPDepot0021 - Northern Pacific Depot at Ashland, Wisconsin, 1975
- ItemNPDepot0022 - Northern Pacific Depot at Ashland, Wisconsin, undated
- 639 more...