1879. Gamble, W. H. (William H.) (Draftsman and engraver). Atlas plate 81. Date of copyright registration 1880. Longitude west from Greenwich and Washington, D.C. 14 x 11.5 inches General Minnesota Maps. [S. Augustus Mitchell?]; Philadelphia?.
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2. 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.
1879. Minnesota State Board of Immigration. Cartographic Details: Scale approximately 1:1,500,000. (W 97‚Å∞15 π--W 89‚Å∞30 π/N 49‚Å∞23 π--N 43‚Å∞ 30 π).Shows railroads as of 1879.Inset: Minne... Pioneer Press Co. (St. Paul, Minnesota).
1879. United States. General Land Office. 79 x 63 centimeters Scale 1:950,400. 15 miles to 1 in. General Minnesota Maps. The Office, (Washington?).