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
- 3133 more...
- ItemBB032973 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge A20.8 (166.1) - Scappoose Creek, West of Scappoose, Oregon, 1952
- ItemBB032974 - Spokane, Portland and Seattle Railway Engineering Drawing: Steel Detail, Bridge A20.8 (166.1) - Scappoose Creek, West of Scappoose, Oregon, undated
- ItemBB032975 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Spans, Bridge A20.8 (166.1) - Scappoose Creek, West of Scappoose, Oregon, undated
- 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
- 776 more...