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
- 4306 more...
- ItemBB018961 - Northern Pacific Engineering Drawing: Shop Plan - Cross Frame/Lateral, Bridge 93.3 - Ostrander Creek, South of Castle Rock, Washington, undated
- ItemBB018962 - Northern Pacific Engineering Drawing: Shop Plan - Lateral Brace, Bridge 93.3 - Ostrander Creek, South of Castle Rock, Washington, undated
- ItemBB018963 - Northern Pacific Engineering Drawing: Shop Plan - Bill of Material, Bridge 93.3 - Ostrander Creek, South of Castle Rock, Washington, undated
- ItemBB018964 - Northern Pacific Engineering Drawing: Platform of Bridge, Bridge 12 (12.4) - Silver Bow Creek, North of Durant, Montana, 1914
- ItemBB018965 - Northern Pacific Engineering Drawing: Abutments as Constructed, Bridge 12 (12.4) - Silver Bow Creek, North of Durant, Montana, undated
- ItemBB018966 - Northern Pacific Engineering Drawing: Detail of Abutments, Bridge 12 (12.4) - Silver Bow Creek, North of Durant, Montana, undated
- ItemBB018967 - Northern Pacific Engineering Drawing: Sketch of Abutments, Bridge 12 (12.4) - Silver Bow Creek, North of Durant, Montana, undated
- ItemBB018968 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 12 (12.4) - Silver Bow Creek, North of Durant, Montana, 1952
- ItemBB018969 - Northern Pacific Engineering Drawing: Shop Plan - Erection, etc., Bridge 12 (12.4) - Silver Bow Creek, North of Durant, Montana, undated
- 3413 more...