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
- 2895 more...
- ItemBB017426 - Northern Pacific Engineering Drawing: Reinforcement Concrete Trestle, Bridge 122, West of Mesa, Washington, 1928
- ItemBB017427 - Northern Pacific Engineering Drawing: Concrete Trestle, Bridge 77, South of Paha, Washington, 1926
- ItemBB017428 - Northern Pacific Engineering Drawing: Concrete Trestle, Bridge 107, West of Cunningham, Washington, 1927
- ItemBB017429 - Northern Pacific Engineering Drawing: Reinforcement Concrete Trestle, Bridge 131, West of Eltopia, Washington, 1926
- ItemBB017430 - Northern Pacific Engineering Drawing: Remodel Pier Number 1/73, Bridge 0 - Missoula River, South of Missoula, Montana, undated
- ItemBB017431 - Northern Pacific Engineering Drawing: General Plan, Detail of Abutment, Bridge 0 - Missoula River, South of Missoula, Montana, 1929
- ItemBB017432 - Northern Pacific Engineering Drawing: Detail Piers and Tie Plan, Bridge 0 - Missoula River, South of Missoula, Montana, undated
- ItemBB017433 - Northern Pacific Engineering Drawing: Add Walk and Railing/30, Bridge 0 - Missoula River, South of Missoula, Montana, undated
- ItemBB017434 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 0 - Missoula River, South of Missoula, Montana, undated
- 4824 more...