Carson left the Army on November 22, 1867. He moved his family to a small settlement on the Purgatoire River called Boggsville, Colorado. He had no money. He sold his house in Taos. He wanted to build a ranch. In January 1868, he was made superintendent of Indian Affairs in the Colorado Territory. He was called to Washington, D. C. in February 1868 with Ute chiefs and other men to make a treaty. Carson was seriously ill, and doubted he could make the journey, but he felt a responsibility to the chiefs and made the journey. He asked doctors on the East Coast about his health (they gave him little hope of recovery), and toured New York City, Philadelphia, and Boston. His last photograph was snapped in Boston.