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
- 1653 more...
- ItemBB016090 - Northern Pacific Engineering Drawing: Proposed for Rebuilding, Bridge 55 - Saslzer Creek, South of Centralia, Washington, undated
- ItemBB016091 - Northern Pacific Engineering Drawing: Proposed for Rebuilding, Bridge 55 - Saslzer Creek, South of Centralia, Washington, undated
- ItemBB016092 - Northern Pacific Engineering Drawing: Rebuild Bridge, Bridge 55 - Saslzer Creek, South of Centralia, Washington, undated
- ItemBB016093 - Northern Pacific Engineering Drawing: General Plan/Bent Detail, Bridge 55 - Saslzer Creek, South of Centralia, Washington, 1967
- ItemBB016094 - Northern Pacific Engineering Drawing: Beam Span/Pile Cap, Bridge 55 - Saslzer Creek, South of Centralia, Washington, undated
- ItemBB016095 - Northern Pacific Engineering Drawing: Shop Plan - Erection Plan, Bridge 55 - Saslzer Creek, South of Centralia, Washington, undated
- ItemBB016096 - Northern Pacific Engineering Drawing: Shop Plan - Pile Caps, Bridge 55 - Saslzer Creek, South of Centralia, Washington, undated
- ItemBB016097 - Northern Pacific Engineering Drawing: Shop Plan - Miscellaneous, Bridge 55 - Saslzer Creek, South of Centralia, Washington, undated
- ItemBB016098 - Northern Pacific Engineering Drawing: Rest Approach Span Bearing, Bridge 14 - Chambers Creek, South of Titlow, Washington, undated
- 6066 more...