L. David Mech is a senior research scientist with the U.S. Geological Survey and adjunct professor in the departments of Fisheries, Wildlife, and Conservation Biology and of Ecology, Evolution, and Behavior at the University of Minnesota. Among his many books are The Wolf: The Ecology and Behavior of an Endangered Species and the coauthored The Wolves of Denali (both from Minnesota). He is founder of the International Wolf Center in Ely, Minnesota. 

Greg Breining has written for the New York Times, Sports Illustrated, National Geographic Traveler, and Audubon, among many other publications. He has written more than a dozen books, including Wild Shore: Exploring Lake Superior by Kayak (Minnesota, 2000).

Rolf O. Peterson is research professor at Michigan Technological University, where he has led the wolf–moose study at Isle Royale since the early 1970s.