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
- 474 more...
- ItemBB022502 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge T74.6 - Deschutes River, South of Dixon, Oregon, 1954
- ItemBB022503 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge T74.6 - Deschutes River, South of Dixon, Oregon, 1926
- ItemBB022504 - Spokane, Portland and Seattle Railway Engineering Drawing: Abutment/Pier/Falsework, Bridge T74.6 - Deschutes River, South of Dixon, Oregon, undated
- ItemBB022505 - Spokane, Portland and Seattle Railway Engineering Drawing: General Plan/Stress Sheet, Bridge T74.6 - Deschutes River, South of Dixon, Oregon, undated
- ItemBB022506 - Spokane, Portland and Seattle Railway Engineering Drawing: General Detail of Truss, Bridge T74.6 - Deschutes River, South of Dixon, Oregon, undated
- ItemBB022507 - Spokane, Portland and Seattle Railway Engineering Drawing: General Detail of Truss, Bridge T74.6 - Deschutes River, South of Dixon, Oregon, undated
- ItemBB022508 - Spokane, Portland and Seattle Railway Engineering Drawing: Bottom Lateral/Chord Detail, Bridge T74.6 - Deschutes River, South of Dixon, Oregon, undated
- ItemBB022509 - Spokane, Portland and Seattle Railway Engineering Drawing: Floor Beam/Stringer/Bracing, Bridge T74.6 - Deschutes River, South of Dixon, Oregon, undated
- ItemBB022510 - Spokane, Portland and Seattle Railway Engineering Drawing: Through Span Bearings, Bridge T74.6 - Deschutes River, South of Dixon, Oregon, undated
- 3435 more...