Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series007 - Spokane, Portland, and Seattle Railway
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3001 - Bridges
- 2421 more...
- ItemBB031248 - Spokane, Portland and Seattle Railway Engineering Drawing: General Elevations, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, 1907
- ItemBB031249 - Spokane, Portland and Seattle Railway Engineering Drawing: General Elevations, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, 1907
- ItemBB031403 - Spokane, Portland and Seattle Railway Engineering Drawing: Details of End Lift, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB031404 - Spokane, Portland and Seattle Railway Engineering Drawing: End Lock Details, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB031405 - Spokane, Portland and Seattle Railway Engineering Drawing: Rail Lock Gearing, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB031406 - Spokane, Portland and Seattle Railway Engineering Drawing: Equalizer Gears, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB031407 - Spokane, Portland and Seattle Railway Engineering Drawing: Bearings Turning Gear, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB031408 - Spokane, Portland and Seattle Railway Engineering Drawing: Details of Turning Gear, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- ItemBB031409 - Spokane, Portland and Seattle Railway Engineering Drawing: Detail of Shafts, Bridge 9.6 - Columbia River, Vancouver, Washington, undated
- 1488 more...