Railroad Archives Online
- CollectionE0045A - Great Northern Railway- Blueprint-Authorization for Expenditure Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1012 - Cartographic materials
- Subseries Level 2002 - Plats
- 204 more...
- ItemJSBP9140 - Great Northern Railway Historical Society Blueprint Collection JSBP9140, Williston, North Dakota, 1935.
- ItemJSBP9289 - Great Northern Railway Historical Society Blueprint Collection JSBP9289, Willmar, Minnesota, 1941.
- ItemJSBP9290 - Great Northern Railway Historical Society Blueprint Collection JSBP9290, Willmar, Minnesota, 1941.
- ItemJSBP9332 - Great Northern Railway Historical Society Blueprint Collection JSBP9332, Willmar, Minnesota, 1947.
- ItemJSBP10680 - Great Northern Railway Historical Society Blueprint Collection JSBP10680, undated.