D.C. Code § 10-130

The jurisdiction and control of public reservation numbered 32, bounded by Pennsylvania Avenue, Fourteenth Street, E Street, and Thirteen-and-a-half Street Northwest, in the City of Washington, District of Columbia, is hereby transferred from the Chief of Engineers of the United States Army to the Mayor of the District of Columbia, in order to provide a suitable approach to the new District building to be located fronting said reservation.