This advertisement from the Department of the Interior, circa 1911, offers
surplus Indian land for sale.  After allotments for tribal land (to build
schools, missions, or other administrative needs) were determined, the
government sold additional reservation property to individual land
buyers.  In 1911, a total of 150,00 acres of Indian land was sold for
$2,500,000, an average price of $16 per acre.  While the money from these
responsible for the actual disbursement of the cash to the tribes.  The
Indian pictured in this ad was a Yankton Sioux named Not Afraid of Pawnee.