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
- 7169 more...
- ItemBB029145 - Northern Pacific Engineering Drawing: Shop Plan - Column/Bents, Bridge 62.1 - Spokane River, West of Trentwood, Washington, undated
- ItemBB029146 - Northern Pacific Engineering Drawing: Shop Plan - Column/Bents, Bridge 62.1 - Spokane River, West of Trentwood, Washington, undated
- ItemBB029147 - Northern Pacific Engineering Drawing: Shop Plan - Column/Bents, Bridge 62.1 - Spokane River, West of Trentwood, Washington, undated
- ItemBB029242 - Northern Pacific Engineering Drawing: Flume/Headgate, Bridge 83 - Harvey Creek, West of Bearmouth, Montana, undated
- ItemBB029243 - Northern Pacific Engineering Drawing: Masonry Design, Bridge 83 - Harvey Creek, West of Bearmouth, Montana, undated
- ItemBB029244 - Northern Pacific Engineering Drawing: Bridge Seats for Abutment, Bridge 83 - Harvey Creek, West of Bearmouth, Montana, undated
- ItemBB029245 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 83 - Harvey Creek, West of Bearmouth, Montana, 1961
- ItemBB029247 - Northern Pacific Engineering Drawing: Erection/Concrete/Anchor Layout, Bridge 83 - Harvey Creek, West of Bearmouth, Montana, undated
- ItemBB029248 - Northern Pacific Engineering Drawing: Shop Span/Steel Detail, Bridge 83 - Harvey Creek, West of Bearmouth, Montana, undated
- 550 more...