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
- 6023 more...
- ItemBB025681 - Northern Pacific Engineering Drawing: Shop Plan - Lift Guard, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025682 - Northern Pacific Engineering Drawing: Shop Plan - Ladder/Handrail, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025683 - Northern Pacific Engineering Drawing: Shop Plan - Lift Guard, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025684 - Northern Pacific Engineering Drawing: Shop Plan - Braces, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025685 - Northern Pacific Engineering Drawing: Shop Plan - Struts, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025686 - Northern Pacific Engineering Drawing: Shop Plan - Platform Detail, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025687 - Northern Pacific Engineering Drawing: Shop Plan - Stair Detail, Bridge 1 - Columbia River, West of Pasco, Washington, undated
- ItemBB025689 - Northern Pacific Engineering Drawing: Abutments/Piers, Bridge 52 (54), West of Spire Rock, Montana, undated
- ItemBB025690 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 52 (54), West of Spire Rock, Montana, 1962
- 1696 more...