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
- 2858 more...
- ItemBB017387 - Northern Pacific Engineering Drawing: Steel Details, Bridge 0 - Silver Bow Creek, Butte, Montana, undated
- ItemBB017389 - Northern Pacific Engineering Drawing: General Plan, Bridge 0 - Silver Bow Creek, Butte, Montana, 1930
- ItemBB017390 - Northern Pacific Engineering Drawing: Detail of Abutments, Bridge 0 - Silver Bow Creek, Butte, Montana, undated
- ItemBB017391 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 0 - Silver Bow Creek, Butte, Montana, undated
- ItemBB017392 - Northern Pacific Engineering Drawing: Detail 2 End Spans, Bridge 0 - Silver Bow Creek, Butte, Montana, undated
- ItemBB017393 - Northern Pacific Engineering Drawing: Details Center Span, Bridge 0 - Silver Bow Creek, Butte, Montana, undated
- ItemBB017394 - Northern Pacific Engineering Drawing: Shop Plan - General Plan, Bridge 0 - Silver Bow Creek, Butte, Montana, undated
- ItemBB017395 - Northern Pacific Engineering Drawing: Shop Plan - General Plan, Bridge 0 - Silver Bow Creek, Butte, Montana, undated
- ItemBB017396 - Northern Pacific Engineering Drawing: Shop Plan - General Plan, Bridge 0 - Silver Bow Creek, Butte, Montana, undated
- 4861 more...