Railroad Archives Online
- FondsE0480 - Great Northern Railway Historical Society Miscellaneous Collection
- Cyfres003 - Great Northern Railway Company (U.S.)
- Is-gyfres006 - Business Correspondence
- EitemBaggageCreepDoorLetter1950 - Letter Asking Great Northern Railway Employees Regarding Baggage Cars, 1950
- EitemORCB-UnionLetters-JuneJuly1959 - Letters from Vice Chairman of The Order of Railway Conductors and Brakemen to Great Northern Employee Members, 1959
- EitemTieCorrespondence - Miscellaneous Great Northern Correspondence and Statistics Regarding Railroad Track Ties, circa 1903-1907
- EitemTieCorrespondence1896-1897-1907pres3099 - Great Northern Correspondence on Renewal of Bridge Timbers, Pilings and Ties circa 1896, 1897 and 1907
- EitemTieCorrespondenceJJHill1905pres2929 - Great Northern Correspondence with James J. Hill on Renewals of Ties, 1895