Railroad Archives Online
- FondsE0480 - Great Northern Railway Historical Society Miscellaneous Collection
- Serie003 - Great Northern Railway Company (U.S.)
- Teilserie009 - Engineering Records
- 008 - Physical plant drawing
- 007 - Track
- ObjektTieRenewals1891to1897 - Great Northern Statement of Ties Required for Renewal 1891 to 1897
- ObjektTieSpacing_StPMandM_DEST2667 - Saint Paul, Minneapolis and Manitoba Railroad Standard Plan for Spacing Ties, 1888
- ObjektTriangleTieSwitchBOM_DEST2666 - Bill of Materials for Various Track Switches Using Great Northern's Experimental Triangular Ties, 1911
- ObjektTriangularTieSpacing1898 - Drawing Showing Standard Spacing for Great Northern's Experimental Triangular Ties, 1898