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 3007 - Track
- 12 more...
- ItemBB030128 - Spokane, Portland and Seattle Railway Engineering Drawing: General Pl - 40 Foot Arch, Concrete Arch, Salem, Oregon, undated
- ItemBB030129 - Spokane, Portland and Seattle Railway Engineering Drawing: Details - Arch Ring, Concrete Arch, Salem, Oregon, undated
- ItemBB030130 - Spokane, Portland and Seattle Railway Engineering Drawing: Details - Wingwalls, Concrete Arch, Salem, Oregon, undated
- ItemBB030131 - Spokane, Portland and Seattle Railway Engineering Drawing: Details - Reinforcement, Concrete Arch, Salem, Oregon, undated
- ItemBB030132 - Spokane, Portland and Seattle Railway Engineering Drawing: 2 Lines - Multiplate, Culverts, Oregon, undated
- ItemBB030133 - Spokane, Portland and Seattle Railway Engineering Drawing: Detail Plan Box Culvert, Culverts, Oregon, undated
- ItemBB030134 - Spokane, Portland and Seattle Railway Engineering Drawing: Culvert Renewal and Overflow Pipe, Culverts, Oregon, undated
- ItemBB030135 - Spokane, Portland and Seattle Railway Engineering Drawing: Cross Section and Plan - Bridge, Culverts, Oregon, undated
- ItemBB030136 - Spokane, Portland and Seattle Railway Engineering Drawing: Culvert Number 97 - 1917, Culverts, Oregon, 1917
- 71 more...