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
- 4066 more...
- ItemBB018698 - Northern Pacific Engineering Drawing: Plans/Details, Bridge 128 - Salmon Creek, South of Ridgefield, Washington, undated
- ItemBB018699 - Northern Pacific Engineering Drawing: Details, Bridge 128 - Salmon Creek, South of Ridgefield, Washington, undated
- ItemBB018700 - Northern Pacific Engineering Drawing: Sketch of Base Casting, Bridge 128 - Salmon Creek, South of Ridgefield, Washington, undated
- ItemBB018701 - Northern Pacific Engineering Drawing: Shop Plan - Bill of Material, Bridge 128 - Salmon Creek, South of Ridgefield, Washington, undated
- ItemBB018702 - Northern Pacific Engineering Drawing: General Plan, Bridge 130 (160), West of West End, Montana, 1910
- ItemBB018703 - Northern Pacific Engineering Drawing: Location of Repair Reinforced Concrete Tee, Bridge 130 (160), West of West End, Montana, undated
- ItemBB018704 - Northern Pacific Engineering Drawing: Repair Road Crossing Trestles, Bridge 130 (160), West of West End, Montana, undated
- ItemBB018705 - Northern Pacific Engineering Drawing: Detail Abutment Proposed Bridge, Bridge 125, West of De Smet, Montana, 1916
- ItemBB018706 - Northern Pacific Engineering Drawing: Shop Plan - Erection/Anchor, Bridge 51, West of Craver, Montana, undated
- 3653 more...