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
- 857 more...
- ItemBB015138 - Northern Pacific Engineering Drawing: Floor System at Piers, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015139 - Northern Pacific Engineering Drawing: Miscellaneous Details, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015140 - Northern Pacific Engineering Drawing: Girder Bearings, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015141 - Northern Pacific Engineering Drawing: Shop Floor Beam Bearings, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015142 - Northern Pacific Engineering Drawing: Ballast Plate Details, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015143 - Northern Pacific Engineering Drawing: Drainage Details, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015144 - Northern Pacific Engineering Drawing: Abutment Rail/Masonry Plan, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015145 - Northern Pacific Engineering Drawing: Bar List, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015146 - Northern Pacific Engineering Drawing: Shop Plan - Anchor Bolt, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- 6862 more...