Colton, J.H. "Dakota" [Wisconsin on verso]

G.W. Colton.  "Dakota."   [map of Wisconsin on verso].  From National Atlas. 

Philadelphia: O.W. Gray & Son, ca. 1875.  15 x 12.  Lithograph.  Original hand color.  Very good condition. 

A nicely detailed map of showing counties, towns, canals, roads, railroads & topography by the Philadelphia firm of O.W. Gray and Son.  The firm began its publishing around mid-century and produced regional and U.S. atlases up to the 1880s.  This map is typical of their work, and its attractive presentation and interesting detail make it a nice example of late nineteenth century Philadelphia cartography.