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.
D.C. Code § 42-602
Effective date of deeds, see § 42-401. Failures in formal requisites of an instrument, fraudulent acts, see § 42-404. .