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
- 1291 more...
- ItemBB015619 - Northern Pacific Engineering Drawing: Reinforce Concrete Trestle, Bridge 54.1 Dry Creek, West of Greycliff, Montana, 1926
- ItemBB015620 - Northern Pacific Engineering Drawing: Add Safety Walk, Bridge 54.1 Dry Creek, West of Greycliff, Montana, undated
- ItemBB015621 - Northern Pacific Engineering Drawing: General Plan/Detail Substation, Bridge 24, West of Park City, Montana, 1925
- ItemBB015622 - Northern Pacific Engineering Drawing: Girder Plan/Detail of Slabs, Bridge 24, West of Park City, Montana, undated
- ItemBB015623 - Northern Pacific Engineering Drawing: Walk Addition, Bridge 24, West of Park City, Montana, undated
- ItemBB015624 - Northern Pacific Engineering Drawing: General Plan/Details, Bridge 28 - Irrigation Ditch, West of Park City, Montana, 1925
- ItemBB015625 - Northern Pacific Engineering Drawing: Walk Addition, Bridge 28 - Irrigation Ditch, West of Park City, Montana, undated
- ItemBB015627 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 33.1 - Chehalis Western Railroad, South of Saint Clair, Washington, 1950
- ItemBB015628 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 33.1 - Chehalis Western Railroad, South of Saint Clair, Washington, 1950
- 6428 more...