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
- 1061 more...
- ItemBB015352 - Northern Pacific Engineering Drawing: 40 Foot Tower Span, Bridge 62 - Swamp Creek, West of Tuscor, Montana, undated
- ItemBB015353 - Northern Pacific Engineering Drawing: 50 Foot Girder Span, Bridge 62 - Swamp Creek, West of Tuscor, Montana, undated
- ItemBB015354 - Northern Pacific Engineering Drawing: 70 Foot Girder Span, Bridge 62 - Swamp Creek, West of Tuscor, Montana, undated
- ItemBB015355 - Northern Pacific Engineering Drawing: Detail of Approach Slab, Bridge 62 - Swamp Creek, West of Tuscor, Montana, undated
- ItemBB015356 - Northern Pacific Engineering Drawing: Bridge Movement, Bridge 62 - Swamp Creek, West of Tuscor, Montana, undated
- ItemBB015357 - Northern Pacific Engineering Drawing: Bearing Modification/Account for Movement, Bridge 62 - Swamp Creek, West of Tuscor, Montana, undated
- ItemBB015358 - Northern Pacific Engineering Drawing: Bearing Modification/Account for Movement, Bridge 62 - Swamp Creek, West of Tuscor, Montana, undated
- ItemBB015359 - Northern Pacific Engineering Drawing: General Elevation/Plan, Bridge 67 - Rock Creek, West of Tuscor, Montana, 1956
- ItemBB015360 - Northern Pacific Engineering Drawing: Abutment 1/6, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- 6658 more...