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
- 17 more...
- 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
- ItemBB030137 - Spokane, Portland and Seattle Railway Engineering Drawing: Culvert Number909 Relocation, Culverts, Oregon, undated
- ItemBB030138 - Spokane, Portland and Seattle Railway Engineering Drawing: Concrete Box Culvert, Culverts, Oregon, undated
- ItemBB031528 - Spokane, Portland and Seattle Railway Engineering Drawing: Weigh Bridge, Track Scale, undated
- ItemBB031529 - Spokane, Portland and Seattle Railway Engineering Drawing: Deck Plan, Track Scale, undated
- ItemBB031530 - Spokane, Portland and Seattle Railway Engineering Drawing: Steel Details, Track Scale, undated
- 66 more...