91.597. The bonds authorized by section 91.596 shall besigned by each member of the board, attested by the secretaryunder the seal of the board. Said bonds shall run for a periodnot to exceed twenty years and draw interest at a rate to bedesignated by the board of public works, interest to be payablesemiannually and to be evidenced by the coupons attached. Thebonds and coupons shall be negotiable in form; the coupons may besigned only by the lithographed signatures of the president ofthe board and the secretary thereof.
(L. 1951 p. 349 ยง 3)