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
- 3222 more...
- ItemBB017801 - Northern Pacific Engineering Drawing: Shop Plan - Diagram, Bridge 11.1 - Mercer Slough, South of Wilburton, Washington, undated
- ItemBB017802 - Northern Pacific Engineering Drawing: Shop Plan - Details, Bridge 11.1 - Mercer Slough, South of Wilburton, Washington, undated
- ItemBB017803 - Northern Pacific Engineering Drawing: Shop Plan - Details, Bridge 11.1 - Mercer Slough, South of Wilburton, Washington, undated
- ItemBB017804 - Northern Pacific Engineering Drawing: General Plan and Bill of Material, Bridge 197 - Saint Regis River, Saint Regis, Montana, undated
- ItemBB017805 - Northern Pacific Engineering Drawing: Details of Abutments, Bridge 197 - Saint Regis River, Saint Regis, Montana, 1965
- ItemBB017806 - Northern Pacific Engineering Drawing: Redesign Footings, Bridge 197 - Saint Regis River, Saint Regis, Montana, undated
- ItemBB017807 - Northern Pacific Engineering Drawing: Details Piers and Tie Plan, Bridge 197 - Saint Regis River, Saint Regis, Montana, undated
- ItemBB017808 - Northern Pacific Engineering Drawing: Deck Plan, Bridge 197 - Saint Regis River, Saint Regis, Montana, undated
- ItemBB017809 - Northern Pacific Engineering Drawing: Replace Lateral Brace, Bridge 197 - Saint Regis River, Saint Regis, Montana, undated
- 4497 more...