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
- 5145 more...
- ItemBB020066 - Northern Pacific Engineering Drawing: General Plan - Through Girder, Bridge 70 - Harrison Avenue, Butte, Montana, 1929
- ItemBB020067 - Northern Pacific Engineering Drawing: Details of Bents, Bridge 70 - Harrison Avenue, Butte, Montana, undated
- ItemBB020068 - Northern Pacific Engineering Drawing: Detail Structural Steel, Bridge 70 - Harrison Avenue, Butte, Montana, undated
- ItemBB020069 - Northern Pacific Engineering Drawing: Detail Sidewalk Slab, Bridge 70 - Harrison Avenue, Butte, Montana, undated
- ItemBB020070 - Northern Pacific Engineering Drawing: Detail Bridge Floor, Bridge 70 - Harrison Avenue, Butte, Montana, undated
- ItemBB020071 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 70 - Harrison Avenue, Butte, Montana, undated
- ItemBB020072 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 70 - Harrison Avenue, Butte, Montana, undated
- ItemBB020073 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 70 - Harrison Avenue, Butte, Montana, undated
- ItemBB020074 - Northern Pacific Engineering Drawing: Shop Plan - Through Plate Girder Span, Bridge 70 - Harrison Avenue, Butte, Montana, undated
- 2574 more...