Supplement I (April 15, 1929, to June 16, 1933) to the Code of the District of Columbia: Containing the Laws, General and Permanent in Their Nature Relating to Or in Force in the District of Columbia (except Such Laws as are of Application in the District of Columbia by Reason of Being General and Permanent Laws of the United States), Enacted by the Seventy-first Congress, Seventy-second Congress, and First Session of the Seventy-third Congress, Together with Perfecting Amendments to the Code (with Ancillaries and Index).