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
- 627 more...
- ItemBB014896 - Northern Pacific Engineering Drawing: Reinforce Concrete Trestle, Bridge 128, Eltopia, Washington, 1924
- ItemBB014897 - Northern Pacific Engineering Drawing: Reinforce Concrete Trestle, Bridge 104.1, West of Cunningham, Washington, 1925
- ItemBB014898 - Northern Pacific Engineering Drawing: Plan of Abutments, Bridge 128, West of Sagemoor, Washington, undated
- ItemBB014899 - Northern Pacific Engineering Drawing: Reinforced Concrete Trestle, Bridge 136, West of Sagemoor, Washington, 1924
- ItemBB014900 - Northern Pacific Engineering Drawing: General Plan, Bridge 11 - Silver Bow Creek, West of Silver Bow, Montana, 1953
- ItemBB014901 - Northern Pacific Engineering Drawing: Proposed Highway Undercrossing, Bridge 51 - Highway, West of Childs, Montana, undated
- ItemBB014903 - Northern Pacific Engineering Drawing: General Layout, Bridge 51 - Highway, West of Childs, Montana, 1930
- ItemBB014904 - Northern Pacific Engineering Drawing: Piers/Abutments, Bridge 51 - Highway, West of Childs, Montana, undated
- ItemBB014905 - Northern Pacific Engineering Drawing: Span Number 1, Bridge 51 - Highway, West of Childs, Montana, undated
- 7092 more...