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
- 1092 more...
- ItemBB015383 - Northern Pacific Engineering Drawing: Shop Plan - Bracing, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015384 - Northern Pacific Engineering Drawing: Proposed Permanent Bridge General, Bridge 39 - Pacific Highway, South of East Olympia, Washington, 1922
- ItemBB015385 - Northern Pacific Engineering Drawing: Detail of Abutment, Bridge 39 - Pacific Highway, South of East Olympia, Washington, undated
- ItemBB015386 - Northern Pacific Engineering Drawing: Detail of Slabs, Bridge 39 - Pacific Highway, South of East Olympia, Washington, undated
- ItemBB015387 - Northern Pacific Engineering Drawing: Falsework Plan, Bridge 39 - Pacific Highway, South of East Olympia, Washington, undated
- ItemBB015388 - Northern Pacific Engineering Drawing: Plan of Slab Forms, Bridge 39 - Pacific Highway, South of East Olympia, Washington, undated
- ItemBB015389 - Northern Pacific Engineering Drawing: Plan of Slab Forms, Bridge 39 - Pacific Highway, South of East Olympia, Washington, undated
- ItemBB015399 - Northern Pacific Engineering Drawing: Replace Flume/Trestle, Bridge 41 - Flume, South of Sheridan, Montana, 1950
- ItemBB015402 - Northern Pacific Engineering Drawing: Detail of Girders, Bridge 36 (Spans from Longview, Portland and Northern Railway), West of Thompson Falls, Montana, undated
- 6627 more...