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
- 1318 more...
- ItemBB015647 - Northern Pacific Engineering Drawing: Standard Plan Floor Beam/Stringer, Bridge 46 - Cloquallum River, West of Oakville, Washington, undated
- ItemBB015648 - Northern Pacific Engineering Drawing: Standard Plan Diagonal/Bearings, Bridge 46 - Cloquallum River, West of Oakville, Washington, undated
- ItemBB015649 - Northern Pacific Engineering Drawing: Standard Plan Change Required, Bridge 46 - Cloquallum River, West of Oakville, Washington, undated
- ItemBB015650 - Northern Pacific Engineering Drawing: General Plan/Stress Sheet, Bridge 7 - Marent Gulch, West of Nagos, Montana, 1927
- ItemBB015651 - Northern Pacific Engineering Drawing: Detail Erection Bracket/Masonry, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB015652 - Northern Pacific Engineering Drawing: Truss Details, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB015653 - Northern Pacific Engineering Drawing: Detail of Floor System, Bridge 7 - Marent Gulch, West of Nagos, Montana, undated
- ItemBB015654 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 7 - Marent Gulch, West of Nagos, Montana, 1953
- ItemBB015655 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 7 - Marent Gulch, West of Nagos, Montana, 1953
- 6401 more...