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
- 3314 more...
- ItemBB033156 - Spokane, Portland and Seattle Railway Engineering Drawing: Cranks, Links, etc., Bridge A94.9 - John Day River, West of Knappa, Oregon, undated
- ItemBB033157 - Spokane, Portland and Seattle Railway Engineering Drawing: Shafts, Bridge A94.9 - John Day River, West of Knappa, Oregon, undated
- ItemBB033158 - Spokane, Portland and Seattle Railway Engineering Drawing: Draw Span, Bridge A94.9 - John Day River, West of Knappa, Oregon, undated
- ItemBB033159 - Spokane, Portland and Seattle Railway Engineering Drawing: Main Center Shaft, Bridge A94.9 - John Day River, West of Knappa, Oregon, undated
- ItemBB033160 - Spokane, Portland and Seattle Railway Engineering Drawing: Main Center Shaft, Bridge A94.9 - John Day River, West of Knappa, Oregon, undated
- ItemBB033161 - Spokane, Portland and Seattle Railway Engineering Drawing: Latch Bar Cranks, Bridge A94.9 - John Day River, West of Knappa, Oregon, undated
- ItemBB033162 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Frame Plan, Bridge A97.8 - Columbia River, Astoria, Oregon, 1947
- ItemBB033163 - Spokane, Portland and Seattle Railway Engineering Drawing: Spans/Plate/Bottom Lights, Bridge A97.8 - Columbia River, Astoria, Oregon, undated
- ItemBB033164 - Spokane, Portland and Seattle Railway Engineering Drawing: Stringer Plans, Bridge A99.5, Astoria, Oregon, 1953
- 595 more...