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
- 4757 more...
- ItemBB019582 - Northern Pacific Engineering Drawing: Detail Remodel Substructure, Bridge 40 - Wild Horse Creek, West of Ravalli, Montana, undated
- ItemBB019583 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 40 - Wild Horse Creek, West of Ravalli, Montana, 1952
- ItemBB019584 - Northern Pacific Engineering Drawing: Detail of Abutments, Bridge 11.1 - Lolo River, North of Silver Bow, Montana, undated
- ItemBB019585 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 11.1 - Lolo River, North of Silver Bow, Montana, 1952
- ItemBB019587 - Northern Pacific Engineering Drawing: Replace Bridge/General Plan, Bridge 22, West of Blossburg, Montana, undated
- ItemBB019588 - Northern Pacific Engineering Drawing: Abutment/Bent Details, Bridge 22, West of Blossburg, Montana, undated
- ItemBB019589 - Northern Pacific Engineering Drawing: Steel Details, Bridge 22, West of Blossburg, Montana, undated
- ItemBB019590 - Northern Pacific Engineering Drawing: Deck/Walk Detail/Bill of Material, Bridge 22, West of Blossburg, Montana, undated
- ItemBB019591 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 24.1, West of Blossburg, Montana, 1958
- 2962 more...