Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3001 - Bridges
- 5954 more...
- ItemBB025612 - Northern Pacific Engineering Drawing: Truss L4 to L6, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025613 - Northern Pacific Engineering Drawing: Lifting Girder, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025614 - Northern Pacific Engineering Drawing: Lifting Girder, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025615 - Northern Pacific Engineering Drawing: Deck Details, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025616 - Northern Pacific Engineering Drawing: Machinery House Floor Frame, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025617 - Northern Pacific Engineering Drawing: Operators House, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025618 - Northern Pacific Engineering Drawing: Shoes/Guard/Rope Casting, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025619 - Northern Pacific Engineering Drawing: Tower Span Girder Rail, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025620 - Northern Pacific Engineering Drawing: Rail Joint Assembly, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- 1765 more...