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
- 4891 more...
- ItemBB019783 - Northern Pacific Engineering Drawing: Shop Plan - Ground Floorbeam, etc., Bridge 23 (16) - Sammamish River, Woodinville, Washington, undated
- ItemBB019784 - Northern Pacific Engineering Drawing: Clearance Diagram, Bridge 23 (16) - Sammamish River, Woodinville, Washington, undated
- ItemBB019785 - Northern Pacific Engineering Drawing: Diagram, Bridge 23 (16) - Sammamish River, Woodinville, Washington, undated
- ItemBB019786 - Northern Pacific Engineering Drawing: Plan of Abutment, Bridge 64 - Union Pacific Railroad, West of Irwin, Washington, undated
- ItemBB019787 - Northern Pacific Engineering Drawing: Proposed Bridge Westbound Crossing, Bridge 64 - Union Pacific Railroad, West of Irwin, Washington, undated
- ItemBB019788 - Northern Pacific Engineering Drawing: Detail Reinforcement Concrete Slab, Bridge 64 - Union Pacific Railroad, West of Irwin, Washington, undated
- ItemBB019789 - Northern Pacific Engineering Drawing: Detail Piers/Abutment, Bridge 64 - Union Pacific Railroad, West of Irwin, Washington, undated
- ItemBB019790 - Northern Pacific Engineering Drawing: Overhead Highway Bridge, Bridge 69 - Napa Street, Spokane, Washington, undated
- ItemBB019791 - Northern Pacific Engineering Drawing: General Plan/Abutment, Bridge 22.1 - Squire Creek, East of Oso, Washington, 1901
- 2828 more...