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
- 2531 more...
- ItemBB031611 - Spokane, Portland and Seattle Railway Engineering Drawing: Standard 110 Foot Deck Plate Girder (DPG), undated
- ItemBB031612 - Spokane, Portland and Seattle Railway Engineering Drawing: Standard 35 Foot Deck Plate Girder (DPG), undated
- ItemBB031613 - Spokane, Portland and Seattle Railway Engineering Drawing: Standard 75 Foot Deck Plate Girder (DPG), undated
- ItemBB031614 - Spokane, Portland and Seattle Railway Engineering Drawing: Standard 75 Foot Deck Plate Girder (DPG), undated
- ItemBB031615 - Spokane, Portland and Seattle Railway Engineering Drawing: Standard 75 Foot Deck Plate Girder (DPG), undated
- ItemBB031616 - Spokane, Portland and Seattle Railway Engineering Drawing: Standard 80 Foot Through Plate Girder, undated
- ItemBB031617 - Spokane, Portland and Seattle Railway Engineering Drawing: Ballast Deck Trestle, undated
- ItemBB031618 - Spokane, Portland and Seattle Railway Engineering Drawing: Frame and Pile Trestle, undated
- ItemBB031619 - Spokane, Portland and Seattle Railway Engineering Drawing: Trestle Deck Plan, undated
- 1378 more...