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
- 310 more...
- ItemBB022327 - Spokane, Portland and Seattle Railway Engineering Drawing: Channel Excavation, Bridge T31.8, South of Sinamox, Oregon, undated
- ItemBB022328 - Spokane, Portland and Seattle Railway Engineering Drawing: 12 Foot 11 Inch Spans, Bridge T31.8, South of Sinamox, Oregon, 1949
- ItemBB022330 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge T31.8, South of Sinamox, Oregon, 1949
- ItemBB022331 - Spokane, Portland and Seattle Railway Engineering Drawing: General Plan, Bridge T39.7 - Oak Canyon, Oakbrook, Oregon, undated
- ItemBB022332 - Spokane, Portland and Seattle Railway Engineering Drawing: Pier and Abutment Plan, Bridge T39.7 - Oak Canyon, Oakbrook, Oregon, undated
- ItemBB022334 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge T39.7 - Oak Canyon, Oakbrook, Oregon, 1953
- ItemBB022335 - Spokane, Portland and Seattle Railway Engineering Drawing: Steel Details, Bridge T39.7 - Oak Canyon, Oakbrook, Oregon, undated
- ItemBB022336 - Spokane, Portland and Seattle Railway Engineering Drawing: Steel Shims, Bridge T39.7 - Oak Canyon, Oakbrook, Oregon, undated
- ItemBB022337 - Spokane, Portland and Seattle Railway Engineering Drawing: General Plan, Bridge T43.7 - Deschutes River, South of Oakbrook, Oregon, undated
- 3599 more...