Colton, G.W. & C.B. "Minnesota"

G.W. & C.B. Colton. “Minnesota.” 

Philadelphia: O.W. Gray, ca. 1875.  23 ¾ x 16 ¾.  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.