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
- 3037 more...
- ItemBB032876 - Spokane, Portland and Seattle Railway Engineering Drawing: Plan of Undercrossing, Bridge 74.6, Underwood, Washington, 1907
- ItemBB032878 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Frame Plan, Bridge 74.6, Underwood, Washington, undated
- ItemBB032879 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Frame Plan, Bridge 74.6, Underwood, Washington, undated
- ItemBB032880 - Spokane, Portland and Seattle Railway Engineering Drawing: Bridge Plans, Bridge 74.6, Underwood, Washington, undated
- ItemBB032881 - Spokane, Portland and Seattle Railway Engineering Drawing: Plan of Abutments, Bridge 75.3 - Sawmill Road, Bingen, Washington, 1907
- ItemBB032882 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge 75.3 - Sawmill Road, Bingen, Washington, 1969
- ItemBB032883 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Framing Plan, Bridge 75.3 - Sawmill Road, Bingen, Washington, undated
- ItemBB032884 - Spokane, Portland and Seattle Railway Engineering Drawing: Elevation and Stress Sheet, Bridge 84.9 - Klickitat River, East of Bingen, Washington, 1907
- ItemBB032885 - Spokane, Portland and Seattle Railway Engineering Drawing: Falsework Arch Ring, Bridge 84.9 - Klickitat River, East of Bingen, Washington, undated
- 872 more...