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
- 860 more...
- ItemBB022891 - Spokane, Portland and Seattle Railway Engineering Drawing: Map Showing Topography, Bridge T125.7 - Crooked River, South of Opal City, Oregon, undated
- ItemBB022892 - Spokane, Portland and Seattle Railway Engineering Drawing: Map of Ravine Section, Bridge T125.7 - Crooked River, South of Opal City, Oregon, undated
- ItemBB022893 - Spokane, Portland and Seattle Railway Engineering Drawing: 23 Foot Span, Bridge T145.6, South of Deschutes, Oregon, undated
- ItemBB022895 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge T145.6, South of Deschutes, Oregon, 1949
- ItemBB022896 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - General Plan, Bridge T145.6, South of Deschutes, Oregon, undated
- ItemBB022897 - Spokane, Portland and Seattle Railway Engineering Drawing: 17 Foot 0 Inch Span, Bridge T148.5 - Swally Ditch, South of Deschutes, Oregon, 1949
- ItemBB022899 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Frame Plan, Bridge T148.5 - Swally Ditch, South of Deschutes, Oregon, undated
- ItemBB022900 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - 17 Foot Span, Bridge T148.5 - Swally Ditch, South of Deschutes, Oregon, undated
- ItemBB022901 - Spokane, Portland and Seattle Railway Engineering Drawing: Proposed Bridge, Bridge T149.6 - Underpass, Bend, Oregon, undated
- 3049 more...