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
- 3680 more...
- ItemBB033707 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Vertical Posts, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033708 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Diagonal Member, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033709 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Shoes and Pedestal, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033710 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Pedestals and etc., Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033711 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bars, Pins, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033712 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Masonry Plan, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033713 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Erection Plan, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, undated
- ItemBB033714 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Spans, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, 1907
- ItemBB033715 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Repairs, Bridge 8.8 - Oregon Slough, North of North Portland Junction, Oregon, 1907
- 229 more...