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
- 2591 more...
- ItemBB025940 - Great Northern Engineering Drawing: Shop Plan - Telegraph West Tower, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB025941 - Great Northern Engineering Drawing: Shop Plan - Telegraph West Tower, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB025942 - Great Northern Engineering Drawing: Shop Plan - Telegraph West Tower, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB025943 - Great Northern Engineering Drawing: Shop Plan - Telegraph West Tower, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB025944 - Great Northern Engineering Drawing: Shop Plan - Telegraph West Tower, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB025945 - Great Northern Engineering Drawing: Shop Plan - Telegraph West Tower, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB025946 - Great Northern Engineering Drawing: Shop Plan - Telegraph West Tower, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB025947 - Great Northern Engineering Drawing: Shop Plan - Telegraph West Tower, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- ItemBB025948 - Great Northern Engineering Drawing: Copper Plate for Foot Switch, Bridge 4 - Salmon Bay, Ballard, Washington, undated
- 1401 more...