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
- 3125 more...
- ItemBB032965 - Spokane, Portland and Seattle Railway Engineering Drawing: Access Road Underpass - Deck, Bridge 194.8 - Underpass, Washington, undated
- ItemBB032966 - Spokane, Portland and Seattle Railway Engineering Drawing: Abutments, Bridge A15.3 (172.1) - Road, West of Holbrook, Oregon, 1902
- ItemBB032967 - Spokane, Portland and Seattle Railway Engineering Drawing: Reinforcement Buttress, Bridge A15.3 (172.1) - Road, West of Holbrook, Oregon, undated
- ItemBB032968 - Spokane, Portland and Seattle Railway Engineering Drawing: Abutment Plans, Bridge A16.9 (169), West of Holbrook, Oregon, 1901
- ItemBB032969 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge A16.9 (169), West of Holbrook, Oregon, 1960
- ItemBB032970 - Spokane, Portland and Seattle Railway Engineering Drawing: Ballast Deck, Bridge A20.8 (166.1) - Scappoose Creek, West of Scappoose, Oregon, 1911
- ItemBB032971 - Spokane, Portland and Seattle Railway Engineering Drawing: Abutments and Pier, Bridge A20.8 (166.1) - Scappoose Creek, West of Scappoose, Oregon, undated
- ItemBB032972 - Spokane, Portland and Seattle Railway Engineering Drawing: Piling Plan, Bridge A20.8 (166.1) - Scappoose Creek, West of Scappoose, Oregon, undated
- ItemBB032973 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge A20.8 (166.1) - Scappoose Creek, West of Scappoose, Oregon, 1952
- 784 more...