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
- 3812 more...
- ItemBB027375 - Great Northern Engineering Drawing: Shop Plan - Detail Diagonal, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027376 - Great Northern Engineering Drawing: Shop Plan - Details Pieces, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027377 - Great Northern Engineering Drawing: Shop Plan - Detail Bracing, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027378 - Great Northern Engineering Drawing: Shop Plan - Detail Counterweight, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027379 - Great Northern Engineering Drawing: Shop Plan - Operating Strut, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027381 - Great Northern Engineering Drawing: Shop Plan - Detail Truss, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027382 - Great Northern Engineering Drawing: Shop Plan - Detail Truss, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027383 - Great Northern Engineering Drawing: Shop Plan - Detail Truss, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB027384 - Great Northern Engineering Drawing: Shop Plan - Details Members, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- 180 more...