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
- 64 more...
- ItemBB033274 - Spokane, Portland, and Seattle Railway Engineering Drawing: Reinforced Concrete Arch, Culvert, 1907
- ItemBB033275 - Spokane, Portland, and Seattle Railway Engineering Drawing: Concrete Lining, Culvert, undated
- ItemBB035895 - Spokane, Portland and Seattle Railway Engineering Drawing: Electronic Track Scale, Scale, Albany, Oregon, undated
- ItemBB035896 - Spokane, Portland and Seattle Railway Engineering Drawing: Pit and Approach Slab Details, Scale, Albany, Oregon, undated
- ItemBB035897 - Spokane, Portland and Seattle Railway Engineering Drawing: Reinforcing Bars, Scale, Albany, Oregon, undated
- ItemBB035898 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Field Cable, Scale, Albany, Oregon, undated
- ItemBB035899 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Installation Detail, Scale, Albany, Oregon, undated
- ItemBB035900 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Wheel Detector, Scale, Albany, Oregon, undated
- ItemBB035901 - Spokane, Portland and Seattle Railway Engineering Drawing: Shop Plan - Approach and Exit, Scale, Albany, Oregon, undated
- 19 more...