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
- 3209 more...
- ItemBB033051 - Spokane, Portland and Seattle Railway Engineering Drawing: Floor Beam, Stringer, Laterals, Bridge A60.2 - Beaver Creek, West of Mayger, Oregon, undated
- ItemBB033052 - Spokane, Portland and Seattle Railway Engineering Drawing: Cast Steel Shoes, Bridge A60.2 - Beaver Creek, West of Mayger, Oregon, undated
- ItemBB033053 - Spokane, Portland and Seattle Railway Engineering Drawing: Topographical Map, Bridge A60.2 - Beaver Creek, West of Mayger, Oregon, undated
- ItemBB033054 - Spokane, Portland and Seattle Railway Engineering Drawing: Profile Sketch, Bridge A60.2 - Beaver Creek, West of Mayger, Oregon, undated
- ItemBB033055 - Spokane, Portland and Seattle Railway Engineering Drawing: Map of Crossing, Bridge A62.7 - Clatskanie River - General Plan, West of Clatskanie, Oregon, 1913
- ItemBB033056 - Spokane, Portland and Seattle Railway Engineering Drawing: Foundations, Bridge A62.7 - Clatskanie River, West of Clatskanie, Oregon, undated
- ItemBB033057 - Spokane, Portland and Seattle Railway Engineering Drawing: Plate of Foundations, Bridge A62.7 - Clatskanie River, West of Clatskanie, Oregon, undated
- ItemBB033058 - Spokane, Portland and Seattle Railway Engineering Drawing: 6 Post Bent West Approach, Bridge A62.7 - Clatskanie River, West of Clatskanie, Oregon, undated
- ItemBB033059 - Spokane, Portland and Seattle Railway Engineering Drawing: Draw Protection, Bridge A62.7 - Clatskanie River, West of Clatskanie, Oregon, undated
- 700 more...