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
- 3144 more...
- ItemBB032984 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Frame Plan, Bridge A26.5 (164?) - (No Suggestions) Creek, West of Saint Helens, Oregon, undated
- ItemBB032986 - Spokane, Portland and Seattle Railway Engineering Drawing: Detail of Steel, Bridge A26.5 (164?) - (No Suggestions) Creek, West of Saint Helens, Oregon, undated
- ItemBB032987 - Spokane, Portland and Seattle Railway Engineering Drawing: General Plan and Masonry, Bridge A27.4 (159) - Milton Creek, West of Saint Helens, Oregon, 1899
- ItemBB032989 - Spokane, Portland and Seattle Railway Engineering Drawing: Tie Framing Plan, Bridge A27.4 (159) - Milton Creek, West of Saint Helens, Oregon, undated
- ItemBB032990 - Spokane, Portland and Seattle Railway Engineering Drawing: Through Plate Girder, Bridge A27.4 (159) - Milton Creek, Saint Helens, Oregon, undated
- ItemBB032991 - Spokane, Portland and Seattle Railway Engineering Drawing: Through Plate Girder/Diagram of Types, Bridge A27.4 (159) - Milton Creek, Saint Helens, Oregon, undated
- ItemBB032992 - Spokane, Portland and Seattle Railway Engineering Drawing: End Bearings, Bridge A27.4 (159) - Milton Creek, Saint Helens, Oregon, undated
- ItemBB032993 - Spokane, Portland and Seattle Railway Engineering Drawing: Hook Floor and Anchor, Bridge A27.4 (159) - Milton Creek, Saint Helens, Oregon, undated
- ItemBB032994 - Spokane, Portland and Seattle Railway Engineering Drawing: Temporary Bents, Bridge A27.4 (159) - Milton Creek, Saint Helens, Oregon, undated
- 765 more...