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
- 121 more...
- ItemBB033358 - Burlington Northern Engineering Drawing: Portal - Water Tunnel, Culverts, undated
- ItemBB033359 - Burlington Northern Engineering Drawing: 12 Foot X 12 Foot Box Culvert, Culverts, undated
- ItemBB033360 - Burlington Northern Engineering Drawing: Reinforced Concrete Headwall, Culverts, 1938
- ItemBB033361 - Burlington Northern Engineering Drawing: 12 Foot X 12 Foot Box Culvert, Culverts, undated
- 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
- 31 more...