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
- 13 more...
- ItemBB014226 - Northern Pacific Engineering Drawing: Shop Plan - Girders, Bridge 164 - Gallatin River, West of Logan, Montana, undated
- ItemBB014227 - Northern Pacific Engineering Drawing: Shop Plan - Ground Floor Beam, Bridge 164 - Gallatin River, West of Logan, Montana, undated
- ItemBB014228 - Northern Pacific Engineering Drawing: Shop Plan - Stringer/etc., Bridge 164 - Gallatin River, West of Logan, Montana, undated
- ItemBB014229 - Northern Pacific Engineering Drawing: Diagram Missouri River Bridge, Bridge 206 (159) - Missouri River, West of Logan, Montana, undated
- ItemBB014230 - Northern Pacific Engineering Drawing: General Plan, Bridge 206 (159) - Missouri River, West of Townsend, Montana, undated
- ItemBB014231 - Northern Pacific Engineering Drawing: General Plan, Bridge 206 (159) - Missouri River, West of Townsend, Montana, undated
- ItemBB014232 - Northern Pacific Engineering Drawing: General Plan, Bridge 206 (159) - Missouri River, West of Townsend, Montana, undated
- ItemBB014233 - Northern Pacific Engineering Drawing: Piers/Abutments, Bridge 206 (159) - Missouri River, West of Townsend, Montana, undated
- ItemBB014234 - Northern Pacific Engineering Drawing: Repair West Abutment, Bridge 206 (159) - Missouri River, West of Townsend, Montana, undated
- 7706 more...