 From 1937 to 1940, Adolph studied coyotes in Yellowstone National Park, publishing a report that contradicted the existing policies on predator control, leading to reversal of National Park Service policies that encouraged the elimination of coyotes in the park.Adolph continued his studies of predators, publishing "The Wolves of Mount McKinley" in 1944, which resulted in a similar reversal of Park Service wolf control policies in Alaska.Olaus and Mardy Murie moved to Jackson in 1927, living in a now-vanished house that they called "Pumpkin House."