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
- 3904 more...
- ItemBB034028 - Spokane, Portland and Seattle Railway Engineering Drawing: Typical Section, Bridge E26.2 - Beaverton Creek, West of Saint Helens, Oregon, undated
- ItemBB034029 - Spokane, Portland and Seattle Railway Engineering Drawing: Abutments, Bridge E26.2 - Beaverton Creek, West of Saint Helens, Oregon, undated
- ItemBB034030 - Spokane, Portland and Seattle Railway Engineering Drawing: Piers, Bridge E26.2 - Beaverton Creek, West of Saint Helens, Oregon, undated
- ItemBB034031 - Spokane, Portland and Seattle Railway Engineering Drawing: Interior Box Girder, Bridge E26.2 - Beaverton Creek, West of Saint Helens, Oregon, undated
- ItemBB034032 - Spokane, Portland and Seattle Railway Engineering Drawing: Exterior Box Girder, Bridge E26.2 - Beaverton Creek, West of Saint Helens, Oregon, undated
- ItemBB034789 - Spokane, Portland and Seattle Railway Engineering Drawing: Operators House, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB034790 - Spokane, Portland and Seattle Railway Engineering Drawing: Operators House, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB034791 - Spokane, Portland and Seattle Railway Engineering Drawing: Operators House, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB036050 - Spokane, Portland and Seattle Railway Engineering Drawing: Layout Sheet, Bridge T151.2 - Franklin Avenue, Bend, Oregon, undated
- 5 more...