40 U.S.C. § 8123: Record of transfer of jurisdiction between Director of National Park Service and Mayor of District of Columbia

When in accordance with law or mutual legal agreement, spaces or portions of public land are transferred between the jurisdiction of the Director of the National Park Service, as established by the Act of July 1, 1898 (ch. 543, 30 Stat. 570), and the Mayor of the District of Columbia, the letters of transfer and acceptance exchanged between them are sufficient authority for the necessary change in the official maps and for record when necessary.