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 3007 - Track
- 56 more...
- ItemStruc008426 - Northern Pacific Engineering Drawing, Project Location at Green River, Washington, 1958
- ItemStruc009532 - Northern Pacific Engineering Drawing, Yard Air Facilities at Missoula, Montana, 1974
- ItemBB014534 - Northern Pacific Engineering Drawing: 10 Foot Arch, Culvert near Clarks Fork, Eddy, Montana, 1925
- ItemBB014874 - Northern Pacific Engineering Drawing: Proposed Syphon, Syphon West of Carney, Carney, Montana, undated
- ItemBB014875 - Northern Pacific Engineering Drawing: 15 Foot Beam Bridge, Syphon West of Carney, Carney, Montana, undated
- ItemBB014876 - Northern Pacific Engineering Drawing: Reinforce Concrete Syphon, Syphon West of Carney, Carney, Montana, undated
- ItemBB014878 - Northern Pacific Engineering Drawing: Detail of Irrigation Ditch, Syphon West of Carney, Carney, Montana, undated
- ItemBB014879 - Northern Pacific Engineering Drawing: Detail of Conversion Span, Syphon West of Carney, Carney, Montana, undated
- ItemBB014880 - Northern Pacific Engineering Drawing: Substructure, Syphon West of Carney, Carney, Montana, undated
- 263 more...