Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series001 - Burlington Northern Railroad Company
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3001 - Bridges
- 76 more...
- ItemBB017002 - Burlington Northern Engineering Drawing: Deck Plan, Bridge 87 (139) - Hell Gate River (formerly Northern Pacific), West of Bearmouth, Montana, 1980
- ItemBB017020 - Burlington Northern Engineering Drawing: Deck Plan, Bridge 113 - Big Blackfoot River (formerly Northern Pacific), West of Bonner, Montana, 1986
- ItemBB017034 - Burlington Northern Engineering Drawing: Deck Plan, Bridge 116 - Missoula River (formerly Northern Pacific), West of Bonner, Montana, 1977
- ItemBB017247 - Burlington Northern Engineering Drawing: Deck and Walk Plan, Bridge 36 - Clark Fork River (formerly Northern Pacific), West of Thompson Falls, Montana, 1981
- ItemBB017259 - Burlington Northern Engineering Drawing: Bent Number 7, Bridge 36 - Clark Fork River (formerly Northern Pacific), West of Thompson Falls, Montana, 1970
- ItemBB017260 - Burlington Northern Engineering Drawing: Bent Number 7, Bridge 36 - Clark Fork River (formerly Northern Pacific), West of Thompson Falls, Montana, 1970
- ItemBB017261 - Burlington Northern Engineering Drawing: Profile With Shims, Bridge 36 - Clark Fork River (formerly Northern Pacific), West of Thompson Falls, Montana, 1970
- ItemBB017262 - Burlington Northern Engineering Drawing: Steel Repairs, Bridge 36 - Clark Fork River (formerly Northern Pacific), West of Thompson Falls, Montana, 1973
- ItemBB017263 - Burlington Northern Engineering Drawing: Steel Repairs, Bridge 36 - Clark Fork River (formerly Northern Pacific), West of Thompson Falls, Montana, 1973
- 1104 more...