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
- 1832 more...
- ItemBB028415 - Spokane, Portland and Seattle Railway Engineering Drawing: Electric Turntable, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028416 - Spokane, Portland and Seattle Railway Engineering Drawing: Piping Diagram, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028417 - Spokane, Portland and Seattle Railway Engineering Drawing: Rail Lock Industry Switch, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028418 - Spokane, Portland and Seattle Railway Engineering Drawing: Control Stand Detail, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028419 - Spokane, Portland and Seattle Railway Engineering Drawing: Power House, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028420 - Spokane, Portland and Seattle Railway Engineering Drawing: Electric Turntable Details, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028421 - Spokane, Portland and Seattle Railway Engineering Drawing: Junction Box and Cable Clamp, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028422 - Spokane, Portland and Seattle Railway Engineering Drawing: Switch Box and Details, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028423 - Spokane, Portland and Seattle Railway Engineering Drawing: Gears Limit Switch, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- 2077 more...