Railroad Archives Online
- CollectionD0396 - Jay Lentzner Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1012 - Cartographic materials
- Subseries Level 2003 - Track profile
- 4 more...
- ItemW2021-054-06 - Great Northern Track Profile Milepost 255-274, Basin, Montana, 1972
- ItemW2021-054-07 - Great Northern Track Profile Milepost 235-255, Jefferson, Montana, undated
- ItemW2021-054-09 - Great Northern Track Profile Milepost 185-255, Helena, Montana, undated
- ItemW2021-054-10 - Great Northern Track Profile - Entire Line, Hubbard, Montana, 1942
- ItemW2021-054-11 - Great Northern Track Profile Milepost 275-286, Woodville, Montana, 1955
- ItemW2021-054-12 - Great Northern Track Profile Milepost 1232-1252, Batavia, Montana, undated
- ItemW2021-054-13 - Great Northern Track Profile Milepost 956-1092, Shelby, Montana, undated
- ItemW2021-054-14 - Great Northern Track Profile Milepost 1092-1208, Summit, Montana, undated