Railroad Archives Online
- CollectionD0396 - Jay Lentzner Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1012 - Cartographic materials
- Subseries Level 2003 - Track profile
- ItemW2021-054-02 - Great Northern Track Profile Milepost 275-285, Woodville, Montana, 1957
- ItemW2021-054-03 - Great Northern Track Profile Milepost 222.76-256.95, Basin, Montana, 1982
- ItemW2021-054-04 - Great Northern Track Profile Milepost 256-274, Basin, Montana, 1972
- ItemW2021-054-05 - Great Northern Track Profile Milepost 275-285, Woodville, Montana, 1972
- 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
- 4 more...