Career
Exum is best remembered for ascents in the Teton Range. In 1931, while only in his teens, Exum was the first to climb the exposed ridge to the summit of Grand Teton which now bears his name. The Exum Ridge remains one of the most popular routes to the summit of Grand Teton.
The school they founded, now known as Exum Mountain Guides, still operates today within Grand Teton National Park.