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
- 5585 more...
- ItemBB020681 - Northern Pacific Engineering Drawing: Shop Plan - Girder Assembly, Bridge 176 - Highway I-90, Westfall, Montana, undated
- ItemBB020682 - Northern Pacific Engineering Drawing: Shop Plan - Girder Assembly, Bridge 176 - Highway I-90, Westfall, Montana, undated
- ItemBB020683 - Northern Pacific Engineering Drawing: Shop Plan - Girder Assembly, Bridge 176 - Highway I-90, Westfall, Montana, undated
- ItemBB020684 - Northern Pacific Engineering Drawing: Shop Plan - Girder Assembly, Bridge 176 - Highway I-90, Westfall, Montana, undated
- ItemBB020685 - Northern Pacific Engineering Drawing: Shop Plan - Girder Assembly, Bridge 176 - Highway I-90, Westfall, Montana, undated
- ItemBB020686 - Northern Pacific Engineering Drawing: Shop Plan - Girder Assembly, Bridge 176 - Highway I-90, Westfall, Montana, undated
- ItemBB020687 - Northern Pacific Engineering Drawing: Shop Plan - Girder Assembly, Bridge 176 - Highway I-90, Westfall, Montana, undated
- ItemBB020688 - Northern Pacific Engineering Drawing: Shop Plan - Girder Assembly, Bridge 176 - Highway I-90, Westfall, Montana, undated
- ItemBB020689 - Northern Pacific Engineering Drawing: Shop Plan - Girder Assembly, Bridge 176 - Highway I-90, Westfall, Montana, undated
- 2134 more...