Robert George Tatum was an American mountain climber and Episcopal priest. He, along with Hudson Stuck, Harry Karstens, and Walter Harper made up the expedition that was the first to successfully climb Denali, the tallest mountain in North America, on June 7, 1913.

Henry Peter Karstens was the first superintendent of Denali National Park, from 1921 to 1928. He was the guide and climbing leader of the first complete ascent of Denali in 1913, with expedition members Hudson Stuck, Walter Harper and Robert Tatum. John Fredson and Esaias George were two young Gwich'in Alaska Natives who supported the party.