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
- 398 more...
- ItemBB014640 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 14, West of Evaro, Montana, 1957
- ItemBB014641 - Northern Pacific Engineering Drawing: General Plan/Detail Piers, Bridge 19 (15) - Jefferson River, Sappington, Montana, 1904
- ItemBB014642 - Northern Pacific Engineering Drawing: Detail of Abutment, Bridge 19 (15) - Jefferson River, Sappington, Montana, undated
- ItemBB014643 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 19 (15) - Jefferson River, Sappington, Montana, 1955
- ItemBB014644 - Northern Pacific Engineering Drawing: Girders, Bridge 19 (15) - Jefferson River, Sappington, Montana, undated
- ItemBB014645 - Northern Pacific Engineering Drawing: General Plan/Detail Abutment, Bridge 41 (50) - Kaiser Creek, West of Columbus, Montana, 1909
- ItemBB014646 - Northern Pacific Engineering Drawing: Plan of Abutments, Bridge 41 (50) - Kaiser Creek, West of Columbus, Montana, undated
- ItemBB014648 - Northern Pacific Engineering Drawing: Add Safety Walk, Bridge 41 (50) - Kaiser Creek, West of Columbus, Montana, undated
- ItemBB014649 - Northern Pacific Engineering Drawing: General Plans, Bridge 60.1 (90), West of Reed Point, Montana, 1901
- 7321 more...