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
- 3516 more...
- ItemBB033535 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Deck Footing, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033536 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Deck Footing, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033537 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Deck Assembly, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033538 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Deck Assembly, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033539 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bearing Plates, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033540 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Details, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033541 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Field Splice, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033542 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Diaphragm, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033543 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Floor Beam Details, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- 393 more...