Railroad Archives Online
- FondsE0045A - Great Northern Railway- Blueprint-Authorization for Expenditure Collection
- Serie003 - Great Northern Railway Company (U.S.)
- Teilserie009 - Engineering Records
- 008 - Physical plant drawing
- 008 - Tunnels
- ObjektJSBP0447 - Great Northern Railway Historical Society Blueprint Collection JSBP0447, Belton, Montana, 1943.
- ObjektJSBP0448 - Great Northern Railway Historical Society Blueprint Collection JSBP0448, Belton, Montana, 1957.
- ObjektJSBP0449 - Great Northern Railway Historical Society Blueprint Collection JSBP0449, Belton, Montana, 1958.
- ObjektJSBP0494 - Great Northern Railway Historical Society Blueprint Collection JSBP0494, Berne, Washington, 1948.
- ObjektJSBP0495 - Great Northern Railway Historical Society Blueprint Collection JSBP0495, Berne, Washington, 1948.
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