Maker: Walling and Gray.
Hand colored geological map of Massachusetts, showing major areas of deposits of the Eozoic, the Paleozoic, the Mesozoic, and the Cenozoic eras. Surrounded by explanatory text. From the Walling & Gray "Official Topographical Atlas of Massachusetts" 1871. Good to very good overall antique condition with toning, some small stains at the seam, and a repaired seam separation at bottom about 3 inches. Measures approximately 14 x 24 inches.
Item Number: MAS425