Railroad Archives Online
- CollectionD0491 - Warner Swarner Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroads--Buildings and Structures
- Subseries Level 3002 - Depots and Freighthouses
- 88 more...
- ItemWBSGNDepot095 - Great Northern Depot at Helena, Montana, 2014
- ItemWBSGNDepot097 - Great Northern Depot at Butte, Montana, 2014
- ItemWBSGNDepot098 - Great Northern Depot at Silver, Montana (offsite), 2014
- ItemWBSGNDepot099 - Great Northern Depot at Silver, Montana (offsite), 2014
- ItemWBSGNDepot100 - Great Northern Depot at Silver, Montana (offsite), 2014