Great Northern Right of Way and Track Map, Flint Pit, Minnesota, undated
Great Northern Blueprint Number 1251-33-7, map of Flint Gravel Pit, undated. Other subject categories: Right of Way and Track Map
Great Northern Right of Way and Track Map, Flint Pit, Minnesota, undated
Great Northern Blueprint Number 1251-33-1, map of Plat Showing Land Required for Flint Gravel Pit, undated. Other subject categories: Right of Way and Track Map
Great Northern Right of Way and Track Map, Flint Pit, Minnesota, 1904
Great Northern Blueprint Number 1251-33-11, map of Flint Pit, 1904. Other subject categories: Right of Way and Track Map
Great Northern Right of Way and Track Map, Flint Pit, Minnesota, 1902
Great Northern Blueprint Number 1251-33-9, map of Flint Pit, 1902. Other subject categories: Right of Way and Track Map
Great Northern Chart, Flint Pit, Minnesota, undated
Great Northern Blueprint Number 1251-33-10, chart of Flint Gravel Pit Test Pits, undated. Other subject categories: Chart