The Secretary of the Interior, or his accredited representative, shall at all times have access to any books and records of the Choctaw, Chickasaw, Cherokee, Creek, and Seminole Tribes, whether in possession of any of the officers of either of said tribes or any officer or custodian thereof, of the State of Oklahoma.
[Mar. 1, 1907, ch. 2285], [34 Stat. 1027].)