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
- 3017 more...
- ItemBB026489 - Great Northern Engineering Drawing: Shop Plan - Truss Members, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026490 - Great Northern Engineering Drawing: Shop Plan - Truss Chord, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026491 - Great Northern Engineering Drawing: Shop Plan - Truss Chord, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026492 - Great Northern Engineering Drawing: Shop Plan - Member and Struts, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026493 - Great Northern Engineering Drawing: Shop Plan - Diagonal and Strut, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026494 - Great Northern Engineering Drawing: Shop Plan - Bracing, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026495 - Great Northern Engineering Drawing: Shop Plan - Counterweight Member, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026496 - Great Northern Engineering Drawing: Shop Plan - Counterweight Member, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026497 - Great Northern Engineering Drawing: Shop Plan - Counterweight Member, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- 975 more...