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
- 1966 more...
- ItemBB016405 - Northern Pacific Engineering Drawing: Shop Plan - Detail Spacer, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB016406 - Northern Pacific Engineering Drawing: Shop Plan - Detail Spacer, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB016407 - Northern Pacific Engineering Drawing: Shop Plan - Machine, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB016408 - Northern Pacific Engineering Drawing: Lift Span, Bridge 3 - Snake River, East of Ainsworth Junction, Washington, undated
- ItemBB016409 - Northern Pacific Engineering Drawing: Concrete Slab/Abutment, Bridge 45 - Old Milwaukee Crossing, Rathdrum, Idaho, 1908
- ItemBB016410 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 55 - Flathead River, West of Perma, Montana, 1958
- ItemBB016411 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 55 - Flathead River, West of Perma, Montana, 1958
- ItemBB016412 - Northern Pacific Engineering Drawing: Detail of Post/Chord, Bridge 55 - Flathead River, West of Perma, Montana, undated
- ItemBB016413 - Northern Pacific Engineering Drawing: Detail of Intermediate Post, Bridge 55 - Flathead River, West of Perma, Montana, undated
- 5753 more...