The Frozen Saqqaq Sites of Disko Bay, West Greenland: Qeqertasussuk and Qajaa (2400–900 BC). BJARNE GRØNNOW, 2017. Studies of Saqqaq Material Culture in an Eastern Arctic Perspective. Museum Tusculanum Press, Copenhagen, Denmark. 492 pp. $80.00 (hardcover), ISBN 978-87-635-4561-7.