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
- 464 more...
- ItemJSBP2869 - Great Northern Railway Historical Society Blueprint Collection JSBP2869, Irby, Washington, 1937.
- ItemJSBP2874 - Great Northern Railway Historical Society Blueprint Collection JSBP2874, Iroquis Mine, Minnesota, 1903.
- ItemJSBP2897 - Great Northern Railway Historical Society Blueprint Collection JSBP2897, Judith Gap, Montana, 1922.
- ItemJSBP2920 - Great Northern Railway Historical Society Blueprint Collection JSBP2920, Kalispell Division, 1897.
- ItemJSBP2930 - Great Northern Railway Historical Society Blueprint Collection JSBP2930, Kalispell Division, Montana, undated.
- ItemJSBP2931 - Great Northern Railway Historical Society Blueprint Collection JSBP2931, Kalispell Division, Montana, undated.
- ItemJSBP2932 - Great Northern Railway Historical Society Blueprint Collection JSBP2932, Kalispell Division, Montana, undated.
- ItemJSBP2933 - Great Northern Railway Historical Society Blueprint Collection JSBP2933, Kalispell Division, undated.
- ItemJSBP2934 - Great Northern Railway Historical Society Blueprint Collection JSBP2934, Kalispell Division, undated.
- 577 more...