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
- 4643 more...
- ItemBB019337 - Northern Pacific Engineering Drawing: 30 Foot Beam Span, Bridge 102A - Strong Creek, Thompson Falls, Montana, undated
- ItemBB019338 - Northern Pacific Engineering Drawing: Column/Cross Girders, Bridge 0 - Washington Street, Spokane, Washington, undated
- ItemBB019339 - Northern Pacific Engineering Drawing: Matchmarking Diagram, Bridge 0 - Washington Street, Spokane, Washington, undated
- ItemBB019340 - Northern Pacific Engineering Drawing: Deck Plate Girder (DPG)S, Bridge 0 - Washington Street, Spokane, Washington, undated
- ItemBB019341 - Northern Pacific Engineering Drawing: Details of Pier, Bridge 3.1 - Sand Creek, Sandpoint, Idaho, 1912
- ItemBB019342 - Northern Pacific Engineering Drawing: Detail of Abutment, Bridge 3.1 - Sand Creek, Sandpoint, Idaho, undated
- ItemBB019344 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 3.1 - Sand Creek, Sandpoint, Idaho, 1949
- ItemBB019345 - Northern Pacific Engineering Drawing: Tie Framing Plan, Bridge 3.1 - Sand Creek, Sandpoint, Idaho, undated
- ItemBB019346 - Northern Pacific Engineering Drawing: Steel Repairs, Bridge 3.1 - Sand Creek, Sandpoint, Idaho, undated
- 3076 more...