The governing body of any such municipality may enter into an agreement with any duly incorporated patriotic, historic or civic society or association for the purpose of co-operating with such society or association or a branch or chapter thereof, for the maintenance and care of such cemetery or burial ground, and to share in the expense thereof to the extent of not exceeding the amount appropriated by the municipality for such purpose.

No agreement on the part of any municipality shall be for a term exceeding one year at a time.