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
- 560 more...
- ItemBB014817 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 1 - Skookumchuck River, West of Centralia, Washington, 1949
- ItemBB014818 - Northern Pacific Engineering Drawing: General/Masonry Plan, Bridge 26, West of Blossburg, Montana, 1918
- ItemBB014819 - Northern Pacific Engineering Drawing: Masonry as Constructed, Bridge 26, West of Blossburg, Montana, undated
- ItemBB014821 - Northern Pacific Engineering Drawing: Convert Deck Plate Girder (DPG) Account, Bridge 26, West of Blossburg, Montana, undated
- ItemBB014822 - Northern Pacific Engineering Drawing: General/Masonry Plans, Bridge 27, West of Blossburg, Montana, 1918
- ItemBB014823 - Northern Pacific Engineering Drawing: Masonry as Constructed, Bridge 27, West of Blossburg, Montana, undated
- ItemBB014824 - Northern Pacific Engineering Drawing: Deck Plan, Bridge 27, West of Blossburg, Montana, undated
- ItemBB014825 - Northern Pacific Engineering Drawing: Add Safety Walk, Bridge 27, West of Blossburg, Montana, undated
- ItemBB014826 - Northern Pacific Engineering Drawing: Masonry Plan, Bridge 3 - Latah Creek, West of Empire, Washington, undated
- 7159 more...