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
- 1701 more...
- ItemBB028284 - Spokane, Portland and Seattle Railway Engineering Drawing: Steel Ties, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028285 - Spokane, Portland and Seattle Railway Engineering Drawing: Steel End Ties, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028286 - Spokane, Portland and Seattle Railway Engineering Drawing: Rail Locks, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028287 - Spokane, Portland and Seattle Railway Engineering Drawing: Details of Rail Locks, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028288 - Spokane, Portland and Seattle Railway Engineering Drawing: Draw Span Stress Sheet, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028289 - Spokane, Portland and Seattle Railway Engineering Drawing: General Section and Elevation, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028290 - Spokane, Portland and Seattle Railway Engineering Drawing: Details of Truss, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028291 - Spokane, Portland and Seattle Railway Engineering Drawing: Details of Truss, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028292 - Spokane, Portland and Seattle Railway Engineering Drawing: Center Tower and Portals, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- 2208 more...