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
- 5960 more...
- 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
- ItemBB025621 - Northern Pacific Engineering Drawing: Rail Joint Assembly, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025622 - Northern Pacific Engineering Drawing: Rail Joint Base, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025623 - Northern Pacific Engineering Drawing: Machinery Diagram, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025624 - Northern Pacific Engineering Drawing: Tower Sheaves/Ropes, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025625 - Northern Pacific Engineering Drawing: Operating Drum Assembly, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025626 - Northern Pacific Engineering Drawing: Machinery in House, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- 1759 more...