Railroad Archives Online
- FondsE0477 - BNSF Maps, Drawings and Records Collection
- Série003 - Great Northern Railway Company (U.S.)
- Sous-série009 - Engineering Records
- 007 - Track
- 105 en plus...
- PièceEBP3285 - Great Northern Track Technical Drawing, 1903
- PièceEBP3286 - Wolhaupter Track Technical Drawing, 1903
- PièceEBP3289 - Illinois Steel Company Track Technical Drawing, 1897
- PièceEBP3290 - Great Northern Track Technical Drawing, undated
- PièceEBP3294 - Great Northern Track Technical Drawing, 1899
- PièceEBP3371 - Great Northern Track Technical Drawing, 1909
- PièceEBP3372 - Great Northern Track Technical Drawing, 1909
- PièceEBP3373 - Great Northern Track Technical Drawing, 1909
- PièceEBP3374 - Great Northern Technical Drawing, Road Bed Cross Sections, Montana, 1954
- 140 en plus...