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
- 1088 more...
- ItemBB015379 - Northern Pacific Engineering Drawing: Old Bridge 50 Foot Steel, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015380 - Northern Pacific Engineering Drawing: Shop Plan - Bearing Plates, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015381 - Northern Pacific Engineering Drawing: Shop Plan - Miscellaneous/Bearing, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- ItemBB015382 - Northern Pacific Engineering Drawing: Shop Plan - Column Bents, Bridge 67 - Rock Creek, West of Tuscor, Montana, undated
- 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
- 6631 more...