Regulations governing the sale of the unalloted tribal lands and vacant forfeited town lots : in the Choctaw, Chickasaw, Creek, Cherokee and Seminole Nations, Oklahoma, as authorized by sections 12 and 16 of the act of Congress approved April 26, 1906 (34 Stat., L., 137-143) ; section 15 of the act of Congress approved June 28, 1898, (30 Stat., L., 495) ; section 14 of the act of Congress approved July 1, 1902, (32 Stat. L., 641-642) ; section 1 of the act of Congress approved March 3, 1905, (33 Stat., L., 1048), and the surface of the segregated coal and asphalt lands in the Choctaw and Chickasaw Nations, as authoirized by the act of Congress approved February 19, 1912, (37 Stat., L., 67) as amended by section 18 of the act of Congress approved August 24, 1912, (37 Stat., L., 518-531)