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
- 390 more...
- ItemBB014632 - Northern Pacific Engineering Drawing: Detail Shims, Bridge 122, West of Missoula, Montana, undated
- ItemBB014633 - Northern Pacific Engineering Drawing: General Plan, Bridge 122A, West of Missoula, Montana, undated
- ItemBB014634 - Northern Pacific Engineering Drawing: 28 Foot Steel Beam Span, Bridge 122A, West of Missoula, Montana, undated
- ItemBB014635 - Northern Pacific Engineering Drawing: Girder Plans, Bridge 26, West of Evaro, Montana, 1917
- ItemBB014636 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 26, West of Evaro, Montana, 1958
- ItemBB014637 - Northern Pacific Engineering Drawing: Plan Rising Bridge/Tie Plan, Bridge 26, West of Evaro, Montana, undated
- ItemBB014638 - Northern Pacific Engineering Drawing: 20 Foot Deck Plate Girder (DPG) Span, Bridge 26, West of Evaro, Montana, undated
- ItemBB014639 - Northern Pacific Engineering Drawing: Plan of Abutments, Bridge 14, West of Evaro, Montana, 1901
- ItemBB014640 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 14, West of Evaro, Montana, 1957
- 7329 more...