Railroad Archives Online
- ФондовиE0045A - Great Northern Railway- Blueprint-Authorization for Expenditure Collection
- Серија004 - Northern Pacific Railroad Company
- Подсерија009 - Engineering Records
- 008 - Physical plant drawing
- 004 - Maintenance of Way support
- ЈединицаJSBP4639 - Great Northern Railway Historical Society Blueprint Collection JSBP4639, Seattle, Washington, 1949.
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