Railroad Archives Online
- CollectionE0045A - Great Northern Railway- Blueprint-Authorization for Expenditure Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1009 - Engineering Records
- Subseries Level 2007 - Part fabrication drawing
- ItemJSBP6321 - Great Northern Railway Historical Society Blueprint Collection JSBP6321, System Wide, 1907.
- ItemJSBP6355 - Great Northern Railway Historical Society Blueprint Collection JSBP6355, System Wide, 1909.
- ItemJSBP6369 - Great Northern Railway Historical Society Blueprint Collection JSBP6369, System Wide, 1910.
- ItemJSBP6420 - Great Northern Railway Historical Society Blueprint Collection JSBP6420, System Wide, 1912.
- ItemJSBP6438 - Great Northern Railway Historical Society Blueprint Collection JSBP6438, System Wide, 1913.
- ItemJSBP6439 - Great Northern Railway Historical Society Blueprint Collection JSBP6439, System Wide, 1913.
- 14 more...