Railroad Archives Online
- CollectionE0045A - Great Northern Railway- Blueprint-Authorization for Expenditure Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3001 - Bridges
- 1038 more...
- ItemJSBP10604 - Great Northern Railway Historical Society Blueprint Collection JSBP10604, Montana, undated.
- ItemJSBP10605 - Great Northern Railway Historical Society Blueprint Collection JSBP10605, Montana, undated.
- ItemJSBP10606 - Great Northern Railway Historical Society Blueprint Collection JSBP10606, Montana, undated.
- ItemJSBP10610 - Great Northern Railway Historical Society Blueprint Collection JSBP10610, Montana, undated.
- ItemJSBP10611 - Great Northern Railway Historical Society Blueprint Collection JSBP10611, Montana, undated.
- ItemJSBP10630 - Great Northern Railway Historical Society Blueprint Collection JSBP10630, undated.
- ItemJSBP10631 - Great Northern Railway Historical Society Blueprint Collection JSBP10631, undated.
- ItemJSBP10632 - Great Northern Railway Historical Society Blueprint Collection JSBP10632, undated.
- ItemJSBP10633 - Great Northern Railway Historical Society Blueprint Collection JSBP10633, undated.
- 3 more...