Resides in Fairbanks, Alaska, and has taught photography and photojournalism at the University of Fairbanks for almost 35 years. His assignment work has been featured in many publications, including Time, Outside, LIFE, PDN, Sports Illustrated, Newsweek, The New York Times, and The Washington Post. His photographs have been featured in the Pictures of the Year issues of Time, LIFE, and Stern. Mason won the Leica Oskar Barnack Award in 1989 for his series on the Barrow, Alaska, Whale Rescue, and other awards including World Press Photo and POY.