Investigation of crime and law enforcement in the District of Columbia : hearings before a Special Subcommittee of the Committee on the District of Columbia, House of Representatives, Eighty-first Congress, second session on H. Res. 340, a resolution resolving that the Committee on the District of Columbia, acting as a whole or by subcommittee, is authorized and directed to conduct a full and complete investigation and study of the number and character of crimes committed in the District of Columbia during recent years, and of the action taken by the responsible officers and employees of the federal and district government in identifying and punishing the persons who committed such crimes.