251. Cram's new sectional map of the state of Minnesota : engraved from official draughts of each county.
1879. Cram, George Franklin, 1841-1928. Cartographic Details: Scale [1:633,600] (W 97°15'--W 89°29'/N 49°24'--N 43°30'). 94 x 81 centimeters 1:633,600 General Minnesota Maps. Geo. F. Cram; Chicago, Illinois 1872.