Maryland Election Law Section 13-228

      A political action committee that makes a transfer to the campaign finance entity of a candidate or to a slate shall:

            (1)      display its official name, as filed with the State Board under this subtitle, in a prominent place on the face of the check by which the funds are transferred; and

            (2)      include in a prominent place on the face of the check the words "political action committee" or the notation "PAC", to indicate that the transferor is a political action committee.