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
- 1446 more...
- ItemBB015849 - Northern Pacific Engineering Drawing: Shop Plan - General Revision, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015850 - Northern Pacific Engineering Drawing: Shop Plan - Documents, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015851 - Northern Pacific Engineering Drawing: Walkway Details, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015852 - Northern Pacific Engineering Drawing: Girder Elevation, Bridge 3.1 - Union Pacific Railroad and Highway, West of Empire, Washington, undated
- ItemBB015853 - Northern Pacific Engineering Drawing: General Plan Reinforce Span, Bridge 101.2 & Others, West of Cunningham, Washington, 1934
- ItemBB015854 - Northern Pacific Engineering Drawing: Detail Substructure/Beam/Material, Bridge 101.2 & Others, West of Cunningham, Washington, undated
- ItemBB015855 - Northern Pacific Engineering Drawing: Shop Plan - Beam Brace, Bridge 101.2 & Others, West of Cunningham, Washington, undated
- ItemBB015856 - Northern Pacific Engineering Drawing: 30 Foot Beam Span, Bridge 101.2 & Others, West of Cunningham, Washington, undated
- ItemBB015857 - Northern Pacific Engineering Drawing: Plan of Steel Box Sheetmetal, Bridge 101.2 & Others, West of Cunningham, Washington, undated
- 6273 more...