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
- 1889 more...
- ItemBB028472 - Spokane, Portland and Seattle Railway Engineering Drawing: Shafts and Doors, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028473 - Spokane, Portland and Seattle Railway Engineering Drawing: General Plan Caisson, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028474 - Spokane, Portland and Seattle Railway Engineering Drawing: Double Air Lock, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028475 - Spokane, Portland and Seattle Railway Engineering Drawing: Location Masonry Bearing, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028476 - Spokane, Portland and Seattle Railway Engineering Drawing: General Elevation, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, 1906
- ItemBB028477 - Spokane, Portland and Seattle Railway Engineering Drawing: General Elevation, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, 1906
- ItemBB028478 - Spokane, Portland and Seattle Railway Engineering Drawing: General Plan, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028479 - Spokane, Portland and Seattle Railway Engineering Drawing: Shims for Girder, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028480 - Spokane, Portland and Seattle Railway Engineering Drawing: 80 Foot Deck Plate Girder (DPG), Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- 2020 more...