1870s G.W. Gray & Son Colour Map of Indiana (32 x 20")"This authentic and remarkably preserved 32" x 20" map of Indiana was published by G. W. Gray & Son, a prominent Philadelphia based firm active in the mid to late 19th century. Likely dating from the 1870s (as suggested by the accompanying text visible in the image), this historical map meticulously delineates Indiana's counties with a distinctive red outline, showcasing the state's geographic and political divisions of the era. Beyond its cartographic