of a reduction in elk populations was not wolves, but rather human economic drive. Murie believed that the “caribou’s greatest menace is not the wolf nor the hunter but man's economic development, principally the raising of reindeer”. Murie observed that elk, along with other wild species, needed ample land to survive. Thus, to ensure a species’s survival, Murie argued that preservation of its habitat was necessary. While Murie was critical of his own agency’s ways, it was not until later in his life that he became more outspoken in his views. Besides allowing Murie to formulate his own ideas towards conservation, his time in Alaska gave him additional experience working in the field and resulted in more recognition for him in the realm of field biology.] Wyoming In 1927, after his time in Alaska, Murie was hired by the National Elk Commission to determine the cause of the elk winterkill problem in Jackson Hole, Wyoming. As the chief field biologist, Murie concluded that human development was causing overcrowding in the elk’s winter range. Murie was one of the first to discover that these elk historically resided in the mountains and not solely in the plains thus contributing to overcrowding. Although a National Elk Refuge existed in this region consisting of 4,500 acres, this refuge had some unexpected consequences. Due to supplemental feeding and a rougher browse, elk were developing bacterial lesions in their throat and mouth called necrotic stomatitis or calf diphtheria. The squirrel-tail grass seeds found on the refuge contributed to the irritation of these lesions and the close proximity of elk allowed for the bacteria to spread easily. Through these observations, Murie determined that protecting the elk’s habitat initially, would have been more beneficial than attempting to mitigate the problem later. Service and wildlife organizations In 1937, Murie accepted a council seat on the recently created Wilderness Society. In this role, Murie lobbied successfully against the construction of large federal dams within Glacier National Park, Dinosaur National Monument, Rampart Dam on Alaska’s Yukon River and the Narrows Dam proposed for the mouth of Snake River Canyon. Murie helped to enlarge existing national park boundaries and to create additional new units. Testimony on the boundaries of Olympic National Park helped to convince President Franklin D. Roosevelt to add the temperate rain forest of the Bogachiel River and Hoh Rain Forest in the Hoh River valley. Lobbying for a natural