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
- 609 more...
- ItemBB014869 - Northern Pacific Engineering Drawing: Cover Plates/Lateral, Bridge 107 - Pack River, West of Hope, Montana, undated
- ItemBB014870 - Northern Pacific Engineering Drawing: Lateral Plates, Bridge 107 - Pack River, West of Hope, Montana, undated
- ItemBB014871 - Northern Pacific Engineering Drawing: Concrete Trestle, Bridge 69, West of Quebec, Montana, 1930
- ItemBB014872 - Northern Pacific Engineering Drawing: Concrete Trestle, Bridge 202.1, West of Toston, Montana, 1920
- ItemBB014873 - Northern Pacific Engineering Drawing: Detail of Concrete Trestle, Bridge 37, West of Cardwell, Montana, 1922
- ItemBB014883 - Northern Pacific Engineering Drawing: Steel Detail for Alteration, Bridge 0.1 - No General Plan Found, Drummond, Montana, undated
- ItemBB014884 - Northern Pacific Engineering Drawing: Steel Detail for Alteration, Bridge 0.1 - No General Plan Found, Drummond, Montana, undated
- ItemBB014885 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 0.1 - No General Plan Found, Drummond, Montana, undated
- ItemBB014886 - Northern Pacific Engineering Drawing: Steel Detail for Alteration, Bridge 0.1 - No General Plan Found, Drummond, Montana, undated
- 7110 more...