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
- 2537 more...
- 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
- ItemBB031620 - Spokane, Portland and Seattle Railway Engineering Drawing: Trestle General Elevations, undated
- ItemBB031621 - Spokane, Portland and Seattle Railway Engineering Drawing: Trestle Deck Plan, undated
- ItemBB031622 - Spokane, Portland and Seattle Railway Engineering Drawing: Caps - Brackets - Sizing - Preboring, undated
- ItemBB031623 - Spokane, Portland and Seattle Railway Engineering Drawing: Platform Deck Trestles, undated
- ItemBB031624 - Spokane, Portland and Seattle Railway Engineering Drawing: Standard Frame and Plate Sidewalk, undated
- ItemBB031625 - Spokane, Portland and Seattle Railway Engineering Drawing: Treated Fir Bent, undated
- 1372 more...