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
- 3083 more...
- ItemBB026555 - Great Northern Engineering Drawing: Shop Plan - Ladder and Brackets, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026556 - Great Northern Engineering Drawing: Shop Plan - Details Diagonal, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026557 - Great Northern Engineering Drawing: Shop Plan - Miscellaneous Details, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026558 - Great Northern Engineering Drawing: Shop Plan - Frame Overhead F1, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026559 - Great Northern Engineering Drawing: Shop Plan - Frame Overhead F2, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026560 - Great Northern Engineering Drawing: Shop Plan - Details Diagonal, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026561 - Great Northern Engineering Drawing: Shop Plan - Frames and Channel, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026562 - Great Northern Engineering Drawing: Shop Plan - Stair Section, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB026563 - Great Northern Engineering Drawing: Shop Plan - Stair Section, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- 909 more...