Railroad Archives Online
- ФондовиE0045A - Great Northern Railway- Blueprint-Authorization for Expenditure Collection
- Серија010 - Other Railroads
- Подсерија012 - Cartographic materials
- 001 - Railroads - Right of Way
- ЈединицаJSBP7900 - Great Northern Railway Historical Society Blueprint Collection JSBP7900, System Wide, 1946.
- ЈединицаJSBP8519 - Great Northern Railway Historical Society Blueprint Collection JSBP8519, System Wide, undated.