And Then There Were None: The Demise of Desert Bighorn Sheep in the Pusch Ridge Wilderness. By Paul R. Krausman; Foreword by William W. Shaw; illustrated by Bethann Garramon Merkle. Albuquerque (New Mexico): University of New Mexico Press. $65.00. xvi + 229 p.; ill.; index. ISBN: 9780826357854 (hc); 9780826357861 (eb). 2017.