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
- 730 more...
- ItemBB015001 - Northern Pacific Engineering Drawing: Shop Plan - Bearing Device, Bridge 50 - Beaver Creek, West of Childs, Montana, undated
- ItemBB015002 - Northern Pacific Engineering Drawing: Shop Plan - Bridge Girders, Bridge 50 - Beaver Creek, West of Childs, Montana, undated
- ItemBB015003 - Northern Pacific Engineering Drawing: Shop Plan - Bridge Girders, Bridge 50 - Beaver Creek, West of Childs, Montana, undated
- ItemBB015004 - Northern Pacific Engineering Drawing: Shop Plan - Bridge Girders, Bridge 50 - Beaver Creek, West of Childs, Montana, undated
- ItemBB015005 - Northern Pacific Engineering Drawing: Shop Plan - Miscellaneous Details, Bridge 50 - Beaver Creek, West of Childs, Montana, undated
- ItemBB015006 - Northern Pacific Engineering Drawing: Shop Plan - Inspection Plank, Bridge 50 - Beaver Creek, West of Childs, Montana, undated
- ItemBB015007 - Northern Pacific Engineering Drawing: Shop Plan - Handrail Detail, Bridge 50 - Beaver Creek, West of Childs, Montana, undated
- ItemBB015008 - Northern Pacific Engineering Drawing: Shop Plan - Grating Detail, Bridge 50 - Beaver Creek, West of Childs, Montana, undated
- ItemBB015009 - Northern Pacific Engineering Drawing: Detail of Approach, Bridge 50 - Beaver Creek, West of Childs, Montana, undated
- 6989 more...