Railroad Archives Online
- CollectionE0480 - Great Northern Railway Historical Society Miscellaneous Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1006 - Business Correspondence
- ItemBaggageCreepDoorLetter1950 - Letter Asking Great Northern Railway Employees Regarding Baggage Cars, 1950
- ItemORCB-UnionLetters-JuneJuly1959 - Letters from Vice Chairman of The Order of Railway Conductors and Brakemen to Great Northern Employee Members, 1959
- ItemTieCorrespondence - Miscellaneous Great Northern Correspondence and Statistics Regarding Railroad Track Ties, circa 1903-1907
- ItemTieCorrespondence1896-1897-1907pres3099 - Great Northern Correspondence on Renewal of Bridge Timbers, Pilings and Ties circa 1896, 1897 and 1907
- ItemTieCorrespondenceJJHill1905pres2929 - Great Northern Correspondence with James J. Hill on Renewals of Ties, 1895