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
- 3140 more...
- ItemBB017711 - Northern Pacific Engineering Drawing: Shop Plan - Details, Bridge 51 - Bitter Root River, Grantsdale, Montana, undated
- ItemBB017712 - Northern Pacific Engineering Drawing: Shop Plan - Details, Bridge 51 - Bitter Root River, Grantsdale, Montana, undated
- ItemBB017713 - Northern Pacific Engineering Drawing: Shop Plan - Details, Bridge 51 - Bitter Root River, Grantsdale, Montana, undated
- ItemBB017719 - Northern Pacific Engineering Drawing: Detail Precast Curb, Bridge 45 - Creek, Tenino, Washington, undated
- ItemBB017720 - Northern Pacific Engineering Drawing: Detail Precast Curb, Standard Plan, undated
- ItemBB017721 - Northern Pacific Engineering Drawing: Steel Form Precast Curb, Standard Plan, undated
- ItemBB017722 - Northern Pacific Engineering Drawing: Proposed Replacement, Bridge 10 - Highway, South of Black River, Washington, 1947
- ItemBB017723 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 10 - Highway, South of Black River, Washington, undated
- ItemBB017724 - Northern Pacific Engineering Drawing: Lateral Bracing, Bridge 10 - Highway, South of Black River, Washington, undated
- 4579 more...