In enforcing this Division I, the Commission may:issue subpoenas to compel the attendance and testimony of witnesses and the production of books, papers, records, and documents relating to payroll records, or necessary for hearings, investigations, or proceedings; and administer oaths, subject to the penalties for perjury, to all witnesses. Any such subpoena shall be served by:the Sheriff of Baltimore City or any of his deputies; or any other person authorized by the Maryland Rules of Procedure to effectuate in personam service. In case of disobedience to a subpoena, the Commission may apply to a court of appropriate jurisdiction for an order requiring the attendance and testimony of witnesses and the production of books, papers, records, and documents. Said court, in case of contumacy or refusal to obey any such subpoena, after notice to the person subpoenaed, and upon finding that the attendance or testimony of such witnesses or the production of such books, papers, records, and documents, as the case may be, is relevant or necessary for such hearings, investigations, or proceedings of the Commission, may issue an order requiring the attendance and testimony of such witnesses and the production of such books, papers, records, and documents, or any of them. Any failure to obey such order of the court may be punished by the court as contempt thereof. City Code, 1966, art. 19, §55(5) 1976/83, art. 19, §63(5) Ord. 64-370 Ord. 66-739 Ord. 67-1219 Ord. 90-601 Ord. 04-672