The sums annually available for the Society shall be expended by the Director under the general supervision of the president for the purchase of books, pamphlets, manuscripts, and museum items relating particularly to the history of Vermont and for such other historical material as may be deemed best, for the publication of its proceedings and other matters of historical importance, for the payment of the salary of the Director and the salaries of other employees of the Society, for procuring portraits of deceased Governors and Lieutenant Governors not now possessed by the State, and for binding and preserving documents and other property of the Society. (Amended 1959, No. 80, § 3.)