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
- 2845 more...
- ItemBB017374 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 6 - Chehalis River, Milburn, Washington, 1937
- ItemBB017375 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 6 - Chehalis River, Milburn, Washington, 1927
- ItemBB017376 - Northern Pacific Engineering Drawing: Tie Framing Plan, Bridge 6 - Chehalis River, Milburn, Washington, undated
- ItemBB017377 - Northern Pacific Engineering Drawing: Shop Plan - Vertical Post, Bridge 6 - Chehalis River, Milburn, Washington, undated
- ItemBB017378 - Northern Pacific Engineering Drawing: Downstream Truss, Bridge 6 - Chehalis River, Milburn, Washington, undated
- ItemBB017379 - Northern Pacific Engineering Drawing: General Masonry Plan, Bridge 36 - Cedar Creek, West of Oakville, Washington, 1918
- ItemBB017380 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 36 - Cedar Creek, West of Oakville, Washington, undated
- ItemBB017381 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 36 - Cedar Creek, West of Oakville, Washington, 1927
- ItemBB017382 - Northern Pacific Engineering Drawing: General Plan, Bridge 3.1, West of Logan, Montana, 1928
- 4874 more...