This cover sold recently in the Spinks Shreves Risvold auction in NYC.

'Cant. Gibson/8 Feb 1832' postmark and '25' rate on folded cover to Washington, D.C., endorsed 'To the care of Hon. Lewis Cap, Sec of War'
Description In The Catalog:
Cantonment Gibson, Cherokee Nation, Indian Territory, present day Oklahoma, strong manuscript “Cant. Gibson/8 Feb 1832″ postmark and “25″ rate on folded cover to Washington, D.C., endorsed “To the care of Hon. Lewis Cap, Sec of War,” very fine.The Indian Territory was established June 30,1834 from the western part of the Arkansas Territory. It consisted of the Five Civilized Tribes or nations – Creeks – Cherokees – Chickasaw – Choctaw and Seminole, who were forced to leave their lands in the southeastern part of the U.S., in what is known as “The Trail of Tears”.In 1867 the Indian Nations because of sympathy for the Confederate cause during the Civil War, were ordered to relinquish the western part of the Indian Territory to the Plains Indians – Cheyenne – Arapahoe – Wichita – Comanche – Kiowa and Apache. On May 2, 1890 this western part became the Oklahoma Territory. Then on Nov. 16, 1907 the Indian Territory was combined with the Oklahoma Territory to form the State of Oklahoma.
