Railroad Archives Online
- FondsE0045 - Great Northern Railway Authority for Expenditure Collection
- Série003 - Great Northern Railway Company (U.S.)
- Sous-série002 - Authorization for Expenditure
- 34845 en plus...
- Pièce333348 - Great Northern Railway Authorization for Expenditure (AFE) 16420, 1921.
- Pièce333349 - Great Northern Railway Authorization for Expenditure (AFE) 16421, 1921.
- Pièce333350 - Great Northern Railway Authorization for Expenditure (AFE) 16422, 1921.
- Pièce333351 - Great Northern Railway Authorization for Expenditure (AFE) 16423, 1921.
- Pièce333352 - Great Northern Railway Authorization for Expenditure (AFE) 16424, 1921.
- Pièce333353 - Great Northern Railway Authorization for Expenditure (AFE) 16425, 1921.
- Pièce333354 - Great Northern Railway Authorization for Expenditure (AFE) 16426, 1921.
- Pièce333355 - Great Northern Railway Authorization for Expenditure (AFE) 16427, 1921.
- Pièce333356 - Great Northern Railway Authorization for Expenditure (AFE) 17720, Watertown, South Dakota, 1921.
- 75937 en plus...