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
- 402 more...
- 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
- ItemBB014651 - Northern Pacific Engineering Drawing: Plan of Abutment, Bridge 68 (99), West of Quebec, Montana, 1901
- ItemBB014652 - Northern Pacific Engineering Drawing: Plan of Abutment, Bridge 68 (99), West of Quebec, Montana, undated
- ItemBB014653 - Northern Pacific Engineering Drawing: Ballast Deck, Bridge 68 (99), West of Quebec, Montana, undated
- ItemBB014654 - Northern Pacific Engineering Drawing: Lateral Bracing Span, Bridge 68 (99), West of Quebec, Montana, undated
- 7317 more...