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
- 2409 more...
- ItemBB024959 - Great Northern Engineering Drawing: Shop Plan - Wheels and Bearings, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024960 - Great Northern Engineering Drawing: Shop Plan - Center Casting, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024961 - Great Northern Engineering Drawing: Shop Plan - End Casting, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024962 - Great Northern Engineering Drawing: Shop Plan - Girders and Pins, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024963 - Great Northern Engineering Drawing: Shop Plan - Rods and Pins, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024964 - Great Northern Engineering Drawing: Shop Plan - Shaft/Bridge, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024965 - Great Northern Engineering Drawing: Shop Plan - Bearing/Bridge, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024966 - Great Northern Engineering Drawing: Shop Plan - Bearings/Main Drive, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024967 - Great Northern Engineering Drawing: Shop Plan - End Bearings, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- 1583 more...