Railroad Archives Online
- FondoE0477 - BNSF Maps, Drawings and Records Collection
- Serie003 - Great Northern Railway Company (U.S.)
- Sottoserie009 - Engineering Records
- 007 - Track
- 105 in più...
- Unità documentariaEBP3285 - Great Northern Track Technical Drawing, 1903
- Unità documentariaEBP3286 - Wolhaupter Track Technical Drawing, 1903
- Unità documentariaEBP3289 - Illinois Steel Company Track Technical Drawing, 1897
- Unità documentariaEBP3290 - Great Northern Track Technical Drawing, undated
- Unità documentariaEBP3294 - Great Northern Track Technical Drawing, 1899
- Unità documentariaEBP3371 - Great Northern Track Technical Drawing, 1909
- Unità documentariaEBP3372 - Great Northern Track Technical Drawing, 1909
- Unità documentariaEBP3373 - Great Northern Track Technical Drawing, 1909
- Unità documentariaEBP3374 - Great Northern Technical Drawing, Road Bed Cross Sections, Montana, 1954
- 140 in più...