Abert, John James, 1788-1863Emory, William H. (William Hemsley), 1811-1887 http://id.loc.gov/authorities/names/n87872571 http://viaf.org/viaf/79256034Frémont, John Charles, 1813-1890 http://id.loc.gov/authorities/names/n500254111 map ; 93 x 78 cmRelief shown by hachures.JPEGG 4042 .M5 1843 .N61100328329439015091905888engPublicHydrological basin of the Upper Mississippi RiverMapsMississippi RiverUniversity of Michigan