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
- 1240 more...
- ItemBB015568 - Northern Pacific Engineering Drawing: Detail of Transverse Brace, Bridge 18 - Austin Gulch, West of Skyline, Montana, undated
- ItemBB015569 - Northern Pacific Engineering Drawing: Erection Diagram Deck Slab, Bridge 18 - Austin Gulch, West of Skyline, Montana, undated
- ItemBB015570 - Northern Pacific Engineering Drawing: Repair to Abutment/Pediment, Bridge 18 - Austin Gulch, West of Skyline, Montana, undated
- ItemBB015571 - Northern Pacific Engineering Drawing: Shims under Column, Bridge 18 - Austin Gulch, West of Skyline, Montana, undated
- ItemBB015572 - Northern Pacific Engineering Drawing: Shop Plan - Erection Diagram, Bridge 18 - Austin Gulch, West of Skyline, Montana, undated
- ItemBB015573 - Northern Pacific Engineering Drawing: Shop Plan - Girders, Bridge 18 - Austin Gulch, West of Skyline, Montana, undated
- ItemBB015574 - Northern Pacific Engineering Drawing: Shop Plan - Tower Girder, Bridge 18 - Austin Gulch, West of Skyline, Montana, undated
- ItemBB015575 - Northern Pacific Engineering Drawing: Shop Plan - Girders, Bridge 18 - Austin Gulch, West of Skyline, Montana, undated
- ItemBB015576 - Northern Pacific Engineering Drawing: Shop Plan - Girders, Bridge 18 - Austin Gulch, West of Skyline, Montana, undated
- 6479 more...