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
- 3136 more...
- ItemBB032976 - Spokane, Portland and Seattle Railway Engineering Drawing: Abutments, Bridge A22.2 - Underpass, West of Scappoose, Oregon, undated
- ItemBB032977 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge A22.2 - Underpass, West of Scappoose, Oregon, 1969
- ItemBB032978 - Spokane, Portland and Seattle Railway Engineering Drawing: 40 Foot Deck Plate Girder (DPG), Bridge A22.2 - Underpass, West of Scappoose, Oregon, undated
- ItemBB032979 - Spokane, Portland and Seattle Railway Engineering Drawing: Beams on Concrete Abutment, Bridge A22.8 (164) - Underpass - General Plan, West of Scappoose, Oregon, 1911
- ItemBB032980 - Spokane, Portland and Seattle Railway Engineering Drawing: 20 Foot Beam Girder, Bridge A22.8 (164) - Underpass, West of Scappoose, Oregon, undated
- ItemBB032981 - Spokane, Portland and Seattle Railway Engineering Drawing: Cast Iron Shims, Bridge A22.8 (164) - Underpass, West of Scappoose, Oregon, undated
- ItemBB032982 - Spokane, Portland and Seattle Railway Engineering Drawing: 20 Foot I - Beam Span, Bridge A26.5 (164?) - (No Suggestions) Creek, West of Saint Helens, Oregon, 1902
- ItemBB032983 - Spokane, Portland and Seattle Railway Engineering Drawing: Abutment Details, Bridge A26.5 (164?) - (No Suggestions) Creek, West of Saint Helens, Oregon, undated
- ItemBB032984 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Frame Plan, Bridge A26.5 (164?) - (No Suggestions) Creek, West of Saint Helens, Oregon, undated
- 773 more...