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
- 960 more...
- ItemBB023006 - Spokane, Portland and Seattle Railway Engineering Drawing: Reinforce, Bridge E35.3 - Tualatin River, South of Tigard, Oregon, undated
- ItemBB023007 - Spokane, Portland and Seattle Railway Engineering Drawing: Bearing Shoes, Bridge E35.3 - Tualatin River, South of Tigard, Oregon, undated
- ItemBB023008 - Spokane, Portland and Seattle Railway Engineering Drawing: Sidewalk on Truss, Bridge E35.3 - Tualatin River, South of Tigard, Oregon, undated
- ItemBB023010 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge E40.3 - Underpass, Oregon, 1952
- ItemBB023011 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge E40.3 - Underpass, Oregon, 1952
- ItemBB023012 - Spokane, Portland and Seattle Railway Engineering Drawing: Steel Detail, Bridge E40.3 - Underpass, Oregon, undated
- ItemBB023013 - Spokane, Portland and Seattle Railway Engineering Drawing: Falsework Pile Plan, Bridge E40.3 - Underpass, Oregon, undated
- ItemBB023014 - Spokane, Portland and Seattle Railway Engineering Drawing: Concrete Plan Abutments, Bridge E40.3 - Underpass, South of Tualatin, Oregon, undated
- ItemBB023015 - Spokane, Portland and Seattle Railway Engineering Drawing: Reinforcement Flanges, Bridge E40.3 - Underpass, South of Tualatin, Oregon, undated
- 2949 more...