D.C. Code § 10-137: Authority to make rules and regulations for care of public grounds — Generally.

The Director of the National Park Service and the said Mayor of the District of Columbia are authorized to make all needful rules and regulations for the government and proper care of all the public grounds placed by §§ 6-404, 10-104, 10-106, 10-123, 10-129 and 10-137, under their respective charge and control; and to annex to such rules and regulations such reasonable penalties as will secure their enforcement.