Railroad Archives Online
- FondsE0477 - BNSF Maps, Drawings and Records Collection
- Série003 - Great Northern Railway Company (U.S.)
- Sous-série012 - Cartographic materials
- 001 - Railroads - right of way
- 206 en plus...
- PièceEBP0258 - Filing Map, Billings, Montana, 1906
- PièceEBP0259 - Filing Map, Billings, Montana, 1906
- PièceEBP0260 - Filing Map, Billings, Montana, 1906
- PièceEBP0261 - Filing Map, Billings, Montana, 1903
- PièceEBP0262 - Filing Map, Billings, Montana, 1906
- PièceEBP0264 - Map, Billings, Montana, 1902
- PièceEBP0265 - Map, Billings, Montana, 1906
- PièceEBP0266 - Filing Map, Billings, Montana, 1906
- PièceEBP0267 - Filing Map, Billings, Montana, 1903
- 2801 en plus...