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
- 1070 more...
- ItemBB015361 - Northern Pacific Engineering Drawing: Piers, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015362 - Northern Pacific Engineering Drawing: Steel Bents, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015363 - Northern Pacific Engineering Drawing: Steel Superstructure/Bridge, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015364 - Northern Pacific Engineering Drawing: Deck Detail, Bridge 67 - Rock Creek, West of Tuscor, Montana, 1956
- ItemBB015365 - Northern Pacific Engineering Drawing: Deck Detail/Beam/Material, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015366 - Northern Pacific Engineering Drawing: Bar List/Bend Diagram, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015367 - Northern Pacific Engineering Drawing: Erection Diagram, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015368 - Northern Pacific Engineering Drawing: Columns, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015369 - Northern Pacific Engineering Drawing: Struts, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- 6649 more...