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
- 599 more...
- ItemBB014858 - Northern Pacific Engineering Drawing: Steel Details, Bridge 3 - Latah Creek, West of Empire, Washington, undated
- ItemBB014859 - Northern Pacific Engineering Drawing: Detail Timber Deck Span, Bridge 59 - Rock Creek, South of Grantsdale, Montana, 1941
- ItemBB014860 - Northern Pacific Engineering Drawing: General/Masonry Plan, Bridge 107 - Pack River, West of Hope, Montana, 1920
- ItemBB014862 - Northern Pacific Engineering Drawing: Walk Details, Bridge 107 - Pack River, West of Hope, Montana, undated
- ItemBB014863 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 107 - Pack River, West of Hope, Montana, 1947
- ItemBB014864 - Northern Pacific Engineering Drawing: Shop Plan - Girder Span Center, Bridge 107 - Pack River, West of Hope, Montana, undated
- ItemBB014865 - Northern Pacific Engineering Drawing: Shop Plan - Girder, Bridge 107 - Pack River, West of Hope, Montana, undated
- ItemBB014866 - Northern Pacific Engineering Drawing: Shop Plan - Girder, Bridge 107 - Pack River, West of Hope, Montana, undated
- ItemBB014867 - Northern Pacific Engineering Drawing: Shop Plan - Cross Frame, etc., Bridge 107 - Pack River, West of Hope, Montana, undated
- 7120 more...