Yellowstone National Park has been an important part of our natural heritage for more than a century; even so, some of the men who preserved this great work of nature for the enjoyment of mankind have yet to receive full recognition. Members of the U.S. Army Corps of Engineers were among the first to explore the park area and to urge that it be set aside and protected. Engineers were also responsible for designing, building, and maintaining the system of scenic roads which opened the wonders of Yellowstone to the public. In Enchanted Enclosure, Dr. Baldwin has brought together for the first time original reports which tell the story ---often a dramatic one--- of the dedicated service of the Engineers to the cause of conservation. His book should appeal to the general reader as well as to the specialist. William C. Gribble, Jr. Lieutenant General, USA Chief of Engineers