Railroad Archives Online
- CollectionE0045 - Great Northern Railway Authority for Expenditure Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1002 - Authorization for Expenditure
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- Item332846 - Great Northern Railway Authorization for Expenditure (AFE) 39463, Sioux Falls, South Dakota, 1929.
- Item332847 - Great Northern Railway Authorization for Expenditure (AFE) 39708, Sioux Falls, South Dakota, 1929.
- Item332848 - Great Northern Railway Authorization for Expenditure (AFE) 41463, Sioux Falls, South Dakota, 1929.
- Item332849 - Great Northern Railway Authorization for Expenditure (AFE) 44021, Sioux Falls, South Dakota, 1931.
- Item332850 - Great Northern Railway Authorization for Expenditure (AFE) 41799, Sioux Falls, South Dakota, 1931.
- Item332851 - Great Northern Railway Authorization for Expenditure (AFE) 32989, Sioux Falls, South Dakota, 1926.
- Item332852 - Great Northern Railway Authorization for Expenditure (AFE) 42990, Sioux Falls, South Dakota, 1930.
- Item332853 - Great Northern Railway Authorization for Expenditure (AFE) 41011, Sioux Falls, South Dakota, 1929.
- Item332854 - Great Northern Railway Authorization for Expenditure (AFE) 40500, Sioux Falls, South Dakota, 1929.
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