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
- 4654 more...
- ItemBB019349 - Northern Pacific Engineering Drawing: Install Navigation Lighting, Bridge 3.1 - Sand Creek, Sandpoint, Idaho, undated
- ItemBB019395 - Northern Pacific Engineering Drawing: General Plan/Detail Abutment, Bridge 112, West of Connell, Washington, 1904
- ItemBB019397 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 112, West of Connell, Washington, 1958
- ItemBB019398 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 112, West of Connell, Washington, 1942
- ItemBB019399 - Northern Pacific Engineering Drawing: General Plan/Pier/Abutment, Bridge 96 (313), West of Colby, Montana, 1904
- ItemBB019400 - Northern Pacific Engineering Drawing: Deck Plan, Bridge 96 (313), West of Colby, Montana, undated
- ItemBB019401 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 96 (313), West of Colby, Montana, 1939
- ItemBB019402 - Northern Pacific Engineering Drawing: Floor Beam/Stringers, Bridge 39 - Umatilla River, Union Pacific Connection, Washington, undated
- ItemBB019403 - Northern Pacific Engineering Drawing: Shop Plan - Truss Span, Bridge 39 - Umatilla River, Union Pacific Connection, Washington, undated
- 3065 more...