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
- 3488 more...
- ItemBB033506 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Bill of Material, Bridge 7.4 - Columbia Slough, North of East Saint Johns, Oregon, undated
- ItemBB033507 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Rivet/Bolts, Bridge 7.4 - Columbia Slough, North of East Saint Johns, Oregon, undated
- ItemBB033508 - Spokane, Portland and Seattle Railway Engineering Drawing: Telegraph Brackets, Bridge 7.4 - Columbia Slough, North of East Saint Johns, Oregon, undated
- ItemBB033509 - Spokane, Portland and Seattle Railway Engineering Drawing: Structural and Highway Plans, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033510 - Spokane, Portland and Seattle Railway Engineering Drawing: General Plan, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033511 - Spokane, Portland and Seattle Railway Engineering Drawing: Abutment 1, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033512 - Spokane, Portland and Seattle Railway Engineering Drawing: Wingwall Details, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033513 - Spokane, Portland and Seattle Railway Engineering Drawing: Piers 2/3/4, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- ItemBB033514 - Spokane, Portland and Seattle Railway Engineering Drawing: Piers 3/4, Bridge 0.1 - North Portland Road, North Portland Junction, Oregon, undated
- 421 more...