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
- 317 more...
- 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
- ItemBB022338 - Spokane, Portland and Seattle Railway Engineering Drawing: General Plan, Bridge T43.7 - Deschutes River, South of Oakbrook, Oregon, undated
- ItemBB022339 - Spokane, Portland and Seattle Railway Engineering Drawing: Cable Way for Placing Rock, Bridge T43.7 - Deschutes River, South of Oakbrook, Oregon, undated
- ItemBB022340 - Spokane, Portland and Seattle Railway Engineering Drawing: Progress Profile, Bridge T43.7 - Deschutes River, South of Oakbrook, Oregon, undated
- ItemBB022341 - Spokane, Portland and Seattle Railway Engineering Drawing: North Abutment, Bridge T43.7 - Deschutes River, South of Oakbrook, Oregon, undated
- ItemBB022342 - Spokane, Portland and Seattle Railway Engineering Drawing: Piers I and II, Bridge T43.7 - Deschutes River, South of Oakbrook, Oregon, undated
- ItemBB022343 - Spokane, Portland and Seattle Railway Engineering Drawing: Pier III, Bridge T43.7 - Deschutes River, South of Oakbrook, Oregon, undated
- ItemBB022344 - Spokane, Portland and Seattle Railway Engineering Drawing: Pier IV, Bridge T43.7 - Deschutes River, South of Oakbrook, Oregon, undated
- 3592 more...