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
- 1676 more...
- ItemBB025455 - Spokane, Portland and Seattle Railway Engineering Drawing: Turnout/West Approach, Bridge 31.8 - Underpass, Foster, Oregon, undated
- ItemBB025456 - Spokane, Portland and Seattle Railway Engineering Drawing: General Plan, Bridge 31.8 - Underpass, Foster, Oregon, undated
- ItemBB025457 - Spokane, Portland and Seattle Railway Engineering Drawing: General Plan, Bridge U17.7 (9 - 8) - Underpass, West of Bowers Junction, Oregon, 1927
- ItemBB025458 - Spokane, Portland and Seattle Railway Engineering Drawing: General Plan, Bridge U17.7 (9 - 8) - Underpass, West of Bowers Junction, Oregon, undated
- ItemBB025459 - Spokane, Portland and Seattle Railway Engineering Drawing: Overhead Highway, Bridge U13.5 - Overhead Bridge, Oregon, 1931
- ItemBB025460 - Spokane, Portland and Seattle Railway Engineering Drawing: General Plan, Bridge F5.7 - Dairy Creek, West of Hillsboro, Oregon, 1920
- ItemBB025461 - Spokane, Portland and Seattle Railway Engineering Drawing: Piers, Bridge F5.7 - Dairy Creek, West of Hillsboro, Oregon, undated
- ItemBB025462 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge F5.7 - Dairy Creek, West of Hillsboro, Oregon, 1920
- ItemBB025463 - Spokane, Portland and Seattle Railway Engineering Drawing: Deck Plate Girder (DPG), Bridge F5.7 - Dairy Creek, West of Hillsboro, Oregon, undated
- 2233 more...