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
- 89 more...
- ItemBB033325 - Burlington Northern Engineering Drawing: 12 Foot X 10 Foot Box Culvert, Culverts, undated
- ItemBB033326 - Burlington Northern Engineering Drawing: 16 Foot X 15 Foot Box Culvert, Culverts, undated
- ItemBB033327 - Burlington Northern Engineering Drawing: 6 Foot X 7 Foot Concrete Box, Culverts, 1913
- ItemBB033328 - Burlington Northern Engineering Drawing: Stress Diagram, Culverts, undated
- ItemBB033329 - Burlington Northern Engineering Drawing: Plan - 18 Foot X 16 Foot Arch, Culverts, undated
- ItemBB033331 - Burlington Northern Engineering Drawing: Shop Plan - Saddle, Culverts, undated
- ItemBB033332 - Burlington Northern Engineering Drawing: 4 Foot Concrete Arch Culvert, Culverts, undated
- ItemBB033333 - Burlington Northern Engineering Drawing: 12 Foot Concrete Arch Culvert, Culverts, undated
- ItemBB033334 - Burlington Northern Engineering Drawing: 8 Foot Concrete Arch Culvert, Culverts, undated
- 63 more...