Harrisburg, PA: Pennsylvania Dept. Of Internal Affairs, Topographic and Geologic Survey, 1933. Hardcover. Very Good/No Jacket. This was published as Bulletin G 6 of the Pennsylvania Geological Survey, Fourth Series. The interior of the book is fresh and tight. The map of "Pennsylvania Glacial Deposits" is present. at p. 58-59. A former owner has written his name on the front free end paper, and there is a stamp from the Wisconsin Geological and Natural History Survey just opposite. The green cloth covers show light wear and some colour change at the edge of the boards.