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
- 1738 more...
- ItemBB028321 - Spokane, Portland and Seattle Railway Engineering Drawing: Pinion and Turning Gears, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028322 - Spokane, Portland and Seattle Railway Engineering Drawing: Turning Gears, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028323 - Spokane, Portland and Seattle Railway Engineering Drawing: Equalizer Gear, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028324 - Spokane, Portland and Seattle Railway Engineering Drawing: Turning Shaft Details, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028325 - Spokane, Portland and Seattle Railway Engineering Drawing: Operating House, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028326 - Spokane, Portland and Seattle Railway Engineering Drawing: Turning Machinery, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028327 - Spokane, Portland and Seattle Railway Engineering Drawing: Equalizer Assembly and Detail, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028328 - Spokane, Portland and Seattle Railway Engineering Drawing: Hand Turn Device, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- ItemBB028329 - Spokane, Portland and Seattle Railway Engineering Drawing: End Lift Movement, Bridge 5.1 - Willamette River, North of Willbridge, Oregon, undated
- 2171 more...