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
- 3823 more...
- ItemBB027387 - Great Northern Engineering Drawing: Shop Plan - Details Bracing, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027388 - Great Northern Engineering Drawing: Shop Plan - Detail Member, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027389 - Great Northern Engineering Drawing: Shop Plan - Operating Strut, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027390 - Great Northern Engineering Drawing: Shop Plan - Counterweight Parts, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027391 - Great Northern Engineering Drawing: Shop Plan - Details Counterweight, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027392 - Great Northern Engineering Drawing: Shop Plan - Counterweight Parts, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027393 - Great Northern Engineering Drawing: Shop Plan - Counterweight Parts, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027394 - Great Northern Engineering Drawing: Shop Plan - Bracing Truss, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027395 - Great Northern Engineering Drawing: Shop Plan - Bracing Truss, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- 169 more...