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
- 5626 more...
- ItemBB020722 - Northern Pacific Engineering Drawing: Shop Plan - Bill of Material, Bridge 176 - Highway I-90, Westfall, Montana, undated
- ItemBB020723 - Northern Pacific Engineering Drawing: Shop Plan - Bill of Material, Bridge 176 - Highway I-90, Westfall, Montana, undated
- ItemBB020724 - Northern Pacific Engineering Drawing: General Plan, Bridge 129 - Farm Road, West of De Smet, Montana, 1965
- ItemBB020725 - Northern Pacific Engineering Drawing: Abutment Details, Bridge 129 - Farm Road, West of De Smet, Montana, undated
- ItemBB020726 - Northern Pacific Engineering Drawing: Pier/Slab Details, Bridge 129 - Farm Road, West of De Smet, Montana, undated
- ItemBB020728 - Northern Pacific Engineering Drawing: Proposed for Rebuilding, Bridge 150 - Petty Creek, Lothrop, Montana, 1965
- ItemBB020729 - Northern Pacific Engineering Drawing: General Plan/Timber Deck, Bridge 150 - Petty Creek, Lothrop, Montana, undated
- ItemBB020730 - Northern Pacific Engineering Drawing: Steel Spans 1/2/3, Bridge 150 - Petty Creek, Lothrop, Montana, undated
- ItemBB020731 - Northern Pacific Engineering Drawing: Shop Plan - Span Brace, Bridge 150 - Petty Creek, Lothrop, Montana, undated
- 2093 more...