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
- 3416 more...
- ItemBB033429 - Spokane, Portland and Seattle Railway Engineering Drawing: Soundings, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB033430 - Spokane, Portland and Seattle Railway Engineering Drawing: Soundings, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB033431 - Spokane, Portland and Seattle Railway Engineering Drawing: Soundings, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB033432 - Spokane, Portland and Seattle Railway Engineering Drawing: Sketch Oregon Railroad and Navigation Company Crossing, Bridge 5.7 - Union Pacific Railroad, North of Willbridge, Oregon, undated
- ItemBB033433 - Spokane, Portland and Seattle Railway Engineering Drawing: Encroachment on Abutment, Bridge 5.7 - Union Pacific Railroad, North of Willbridge, Oregon, undated
- ItemBB033434 - Spokane, Portland and Seattle Railway Engineering Drawing: Abutments as Constructed, Bridge 5.7 - Union Pacific Railroad, North of Willbridge, Oregon, undated
- ItemBB033435 - Spokane, Portland and Seattle Railway Engineering Drawing: Railroad Crossing, Bridge 5.7 - Union Pacific Railroad, North of Willbridge, Oregon, undated
- ItemBB033436 - Spokane, Portland and Seattle Railway Engineering Drawing: Abutments Crossing, Bridge 5.7 - Union Pacific Railroad, North of Willbridge, Oregon, 1909
- ItemBB033437 - Spokane, Portland and Seattle Railway Engineering Drawing: Abutments, Bridge 5.7 - Union Pacific Railroad, North of Willbridge, Oregon, undated
- 493 more...