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
- 2346 more...
- ItemBB016797 - Northern Pacific Engineering Drawing: Shop Plan - Girders, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB016798 - Northern Pacific Engineering Drawing: Reinforcement Span West Approach, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB016799 - Northern Pacific Engineering Drawing: New Diaphragm Reinforcement Plate, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB016800 - Northern Pacific Engineering Drawing: Sheet of Details, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB016801 - Northern Pacific Engineering Drawing: New Connection Angle, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB016802 - Northern Pacific Engineering Drawing: Stress Sheet, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB016803 - Northern Pacific Engineering Drawing: End Post/Top Chord, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB016804 - Northern Pacific Engineering Drawing: Top Chord, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB016805 - Northern Pacific Engineering Drawing: Bottom Chord/Collar Strut, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- 5373 more...