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 3007 - Track
- 125 more...
- ItemBB033362 - Burlington Northern Engineering Drawing: Reinforced Concrete Double 5 Foot X 6 Foot Box, Culverts, undated
- ItemBB033363 - Burlington Northern Engineering Drawing: Siphons, Culverts, undated
- ItemBB033364 - Burlington Northern Engineering Drawing: Siphon T - 134.85 Replacement, Culverts, undated
- ItemBB033365 - Burlington Northern Engineering Drawing: Boring Detail - 9 Foot X 5 Foot Box, Culverts, undated
- ItemBB033366 - Burlington Northern Engineering Drawing: 9 Foot X 5 Foot X 46 Foot Box, Culverts, undated
- ItemBB033367 - Burlington Northern Engineering Drawing: Double 8 X 8 Box, Culverts, undated
- ItemBB033368 - Burlington Northern Engineering Drawing: Double 8 X 8 Box, Culverts, undated
- ItemBB033369 - Burlington Northern Engineering Drawing: Extension Culvert A 9 - 01, Culverts, 1969
- ItemBB033370 - Burlington Northern Engineering Drawing: Culvert and Tidegate, Culverts, undated
- 27 more...