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
- 2414 more...
- 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
- ItemBB024968 - Great Northern Engineering Drawing: Shop Plan - Planetary Gear Assembly, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024969 - Great Northern Engineering Drawing: Shop Plan - Crank/Drive, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024970 - Great Northern Engineering Drawing: Shop Plan - Planetary Gear/Bearings, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024971 - Great Northern Engineering Drawing: Shop Plan - Bearings/Drives, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- ItemBB024972 - Great Northern Engineering Drawing: Shop Plan - Gears/Pins, Bridge 12 - Swinomish Slough, West of Whitmarsh, Washington, undated
- 1578 more...