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
- 3136 more...
- ItemBB017707 - Northern Pacific Engineering Drawing: Erection Locations and Girder Elevation, Bridge 51 - Bitter Root River, Grantsdale, Montana, undated
- ItemBB017708 - Northern Pacific Engineering Drawing: Steel Details Internal Floor Beam, Bridge 51 - Bitter Root River, Grantsdale, Montana, undated
- ItemBB017709 - Northern Pacific Engineering Drawing: Steel Details, Bridge 51 - Bitter Root River, Grantsdale, Montana, undated
- ItemBB017710 - Northern Pacific Engineering Drawing: Stringer Details and Brackets, Bridge 51 - Bitter Root River, Grantsdale, Montana, undated
- 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
- 4583 more...