Railroad Archives Online
- FondsE0045 - Great Northern Railway Authority for Expenditure Collection
- Cyfres003 - Great Northern Railway Company (U.S.)
- Is-gyfres002 - Authorization for Expenditure
- 92382 mwy...
- Eitem425340 - Great Northern Railway Authorization for Expenditure (AFE) 46226, Seattle, Washington, 1932.
- Eitem425341 - Great Northern Railway Authorization for Expenditure (AFE) 46347, Seattle, Washington, 1932.
- Eitem425342 - Great Northern Railway Authorization for Expenditure (AFE) 46923, Seattle, Washington, 1933.
- Eitem425343 - Great Northern Railway Authorization for Expenditure (AFE) 47954, Seattle, Washington, 1934.
- Eitem425344 - Great Northern Railway Authorization for Expenditure (AFE) 47947, Seattle, Washington, 1934.
- Eitem425345 - Great Northern Railway Authorization for Expenditure (AFE) 48074, Seattle, Washington, 1934.
- Eitem425346 - Great Northern Railway Authorization for Expenditure (AFE) 48080, Seattle, Washington, 1934.
- Eitem425347 - Great Northern Railway Authorization for Expenditure (AFE) 48128, Seattle, Washington, 1934.
- Eitem425348 - Great Northern Railway Authorization for Expenditure (AFE) 48364, Seattle, Washington, 1934.
- 18400 mwy...