Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3001 - Bridges
- 3305 more...
- ItemBB026780 - Great Northern Engineering Drawing: Shop Plan - Machinery Detail, Bridge 36 - Skagit River, North of Mount Vernon, Washington, undated
- ItemBB026781 - Great Northern Engineering Drawing: Shop Plan - Operating House, Bridge 36 - Skagit River, North of Mount Vernon, Washington, undated
- ItemBB026782 - Great Northern Engineering Drawing: Shop Plan - Stairs, Bridge 36 - Skagit River, North of Mount Vernon, Washington, undated
- ItemBB026783 - Great Northern Engineering Drawing: Shop Plan - Bearing Support, Bridge 36 - Skagit River, North of Mount Vernon, Washington, undated
- ItemBB026784 - Great Northern Engineering Drawing: General Plan and Detail Machinery, Bridge 36 - Skagit River, North of Mount Vernon, Washington, 1917
- ItemBB026785 - Great Northern Engineering Drawing: Shop Plan - Bill of Material Bearing, Bridge 36 - Skagit River, North of Mount Vernon, Washington, undated
- ItemBB026786 - Great Northern Engineering Drawing: Shop Plan - Bill of Material Bolts, Bridge 36 - Skagit River, North of Mount Vernon, Washington, undated
- ItemBB026787 - Great Northern Engineering Drawing: Shop Plan - 60 Foot Through Plate Girder, Bridge 36 - Skagit River, North of Mount Vernon, Washington, undated
- ItemBB026788 - Great Northern Engineering Drawing: Shop Plan - 60 Foot Through Plate Girder, Bridge 36 - Skagit River, North of Mount Vernon, Washington, undated
- 687 more...