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
- 2363 more...
- ItemBB024913 - Great Northern Engineering Drawing: Deck Plan, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024914 - Great Northern Engineering Drawing: Mitered Rail Ends, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024915 - Great Northern Engineering Drawing: Mitered Rail Ends, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024916 - Great Northern Engineering Drawing: Raise West Approach, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024917 - Great Northern Engineering Drawing: Collar Support, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024918 - Great Northern Engineering Drawing: Shop Plan - Diagonal Truss, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024919 - Great Northern Engineering Drawing: Shop Plan - Diagonal Tower, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024920 - Great Northern Engineering Drawing: Shop Plan - Bottom Chord L0 - L2, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024921 - Great Northern Engineering Drawing: Shop Plan - Bottom Chord L2 - L4, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- 1629 more...