The correct answer is the following.
It was necessary to have District of Columbia special courts to exercise jurisdiction over appeals from the Supreme Court in the District of Columbia, including Police, municipal and juvenile courts. The Act of 1948 stated that the judges of the court in the District of Columbia were going to have the same kind of authority that the judges of the regional circuits. In 1973, the Criminal Procedure Act of 1970 established two courts, the Supreme Court and the District of Columbia Court of Appeals to serve for the local jurisdiction.
