(70 ILCS 1820/22)
(from Ch. 19, par. 872)
In case any officer whose signature appears upon any check or
draft issued pursuant to this Act, ceases to hold his office before the
delivery thereof to the payee, his signature nevertheless shall be valid
and sufficient for all purposes with the same effect as if he had remained
in office until delivery thereof.
(Source: P.A. 79-1475.)