The deed of a corporation shall be executed and acknowledged either (1) by an attorney-in-fact appointed for that purpose or (2) without appointment, by its president or a vice-president if also attested by the secretary or assistant secretary of the corporation.
Deeds of corporations; formal requisites; acknowledgment
D.C. Code § 42-602 — under Forms; Covenants and Warranties..
D.C. Code § 42-602