Section 19A. The governor, with the advice and consent of the council, may, on behalf of the commonwealth, accept or otherwise procure suitable portraits or other memorials of the governors of the commonwealth and also of the governors of the province and colony of Massachusetts Bay and the colony of New Plymouth. Portraits or other memorials procured under this section shall be submitted to the art commission for approval prior to their installation in the state house which shall be under the direction of said commission.