N.J. Stat. § 40:60-51.7
Whenever any municipality in this State shall heretofore have acquired lands for public purposes and for places of resort for public health and recreation and to improve the same, and shall thereafter have acquired other lands, which the governing body of the said municipality shall deem to be better suited for the purposes of resort for public health and recreation, and shall have improved such other lands; and whenever the governing body of such municipality shall, by resolution duly adopted, determine that the said lands first acquired are no longer needed for public use, it shall be lawful for the governing body of such municipality to sell such land first acquired, either as a whole or in parcels, and if in parcels, either at 1 time or from time to time, at public auction, to the highest bidder or bidders, upon such terms and conditions and subject to such restrictions as the said governing body shall determine and to be set forth both in the resolution to sell and in the advertisement of sale, and to make due conveyance of such lands pursuant to such sale or sales; provided no part of such land shall be sold until due public advertisement, signed by the municipal clerk, of the time and place of selling the same shall have been given by publication once in each week for 2 consecutive calendar weeks prior to the date of sale, in a newspaper circulating in said municipality, the last publication to be not more than 7 days prior to the day appointed for selling the same.
N.J.S. § 40:60-51.7