Peary's final expedition departed New York City on July 6, 1908, aboard the S.S. Roosevelt under the command of Captain Robert Bartlett. They wintered near Cape Sheridan on Ellesmere Island, and from Ellesmere departed for the pole on February 28 – March 1, 1909. The last support party was turned back from "Bartlett Camp" on April 1, 1909, in latitude no greater than 87°45' north. On the final stage of the journey toward the North Pole, Peary told Bartlett to stay behind. He continued with five assistants, none capable of making navigation observations: American Matthew Henson, and Inuit Ootah, Egigingwah, Seegloo and Ooqueah. On April 6, 1909, he established "Camp Jesup" allegedly within 5 miles (8.0 km) of the pole. Peary was unable to fully enjoy the fruits of his labors. Upon returning to civilization, he learned that Dr. Frederick A. Cook, who had been a surgeon on the 1891–1892 Peary expedition, claimed to have reached the pole in 1908.[6] After some court trials, Peary was proved right, and Cook was declared wrong.