Detailed hydrographic chart of the ultimate source of the Mississippi River / drawn by J.V. Brower, a commissioner, in charge of an expeditionary examination conducted under the authority of the Minnesota State Historical Society, during the year 1889 andBrower, J. V. (Jacob Vradenberg), 1844-19051891Includes text.Insets: Nicollet's source of the Mississippi -- Sketch map of the Itasca Lake region.References given for altitudes, distances, source discoveries, and geographic positions.Relief shown by hachures.cartographic