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
- 3292 more...
- ItemBB017877 - Northern Pacific Engineering Drawing: Splice Material, "NP Transfer", Tacoma, Washington, undated
- ItemBB017878 - Northern Pacific Engineering Drawing: Abutment Details, Bridge 27, Montana, undated
- ItemBB017879 - Northern Pacific Engineering Drawing: Tie Plan, Bridge 27, Montana, undated
- ItemBB017881 - Northern Pacific Engineering Drawing: Shop Plan - Steel - Bents, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017882 - Northern Pacific Engineering Drawing: Shop Plan - Steel - Bents, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017883 - Northern Pacific Engineering Drawing: Shop Plan - Diagonal Brace, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017884 - Northern Pacific Engineering Drawing: Shop Plan - Steel - Bents, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017885 - Northern Pacific Engineering Drawing: Shop Plan - Steel Bents, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- ItemBB017886 - Northern Pacific Engineering Drawing: Shop Plan - Miscellaneous Steel, Bridge 36 - Clark Fork River, West of Thompson Falls, Montana, undated
- 4427 more...