Extends west to Schenectady and the Hudson River, covering Columbia County and most of Rensselaer County. Extend east to cover most of Berkshire County. Shows the Commissioners boundary, 1787. Relief shown by hachures. Publisher from front cover. Probably also published to accompany: The western boundary of Massachusetts: a study of Indian and colonial history / by Franklin Leonard Pope. Pittsfield, Mass.: Privately printed, 1886. 1 map; 37 x 28 cm., folded in cover 22 x 14 cm.