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
- 3105 more...
- ItemBB026577 - Great Northern Engineering Drawing: Shop Plan - Ladder and Railing, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026578 - Great Northern Engineering Drawing: Shop Plan - Machinery Girder, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026579 - Great Northern Engineering Drawing: Shop Plan - Machinery Girder, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026580 - Great Northern Engineering Drawing: Shop Plan - Plates, Angle, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026581 - Great Northern Engineering Drawing: Shop Plan - Posts, Angle, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026582 - Great Northern Engineering Drawing: Shop Plan - Plates, Angle, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026583 - Great Northern Engineering Drawing: Shop Plan - Details Angle, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026584 - Great Northern Engineering Drawing: Shop Plan - Plates and Angle, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026585 - Great Northern Engineering Drawing: Shop Plan - Pocket Cover, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- 887 more...