 The first topographic mapping of Mount Jackson was carried out in November 1940 by a <unk> party of the United States Antarctic Service ( <unk> ) . The ground survey was facilitated by aerial photographs and aerial observations . The height was estimated at 4 @,@ 200 metres ( 13 @,@ 800 ft ) , and the mountain was named Mount Ernest Gruening after the Governor of the Alaska Territory at that time , Ernest Gruening . <unk> later renamed it Mount Jackson for the seventh President of the United States . President Jackson signed the bill into law authorizing the United States Exploring Expedition of 1838 – 42 . The expedition , led by Lt. Charles Wilkes , included exploration and surveying of the Pacific Ocean and surrounding lands , including Antarctica . 
