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
- 985 more...
- ItemBB015266 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015267 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015268 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015269 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015270 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015271 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015272 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015273 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015274 - Northern Pacific Engineering Drawing: Shop Plan - Walk Plate, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- 6734 more...