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
- 1852 more...
- ItemBB028435 - Spokane, Portland and Seattle Railway Engineering Drawing: Stress Sheet, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028436 - Spokane, Portland and Seattle Railway Engineering Drawing: General Section and Elevation, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028437 - Spokane, Portland and Seattle Railway Engineering Drawing: General Details of Truss, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028438 - Spokane, Portland and Seattle Railway Engineering Drawing: Chord, Laterals and Packing, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028439 - Spokane, Portland and Seattle Railway Engineering Drawing: Details of Floor Beams, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028440 - Spokane, Portland and Seattle Railway Engineering Drawing: Top Struts and Stringers, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028441 - Spokane, Portland and Seattle Railway Engineering Drawing: Portal, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028442 - Spokane, Portland and Seattle Railway Engineering Drawing: Cross Frames, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028443 - Spokane, Portland and Seattle Railway Engineering Drawing: Details End Bearings, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- 2057 more...