N.J. Stat. § 46:24-5: Maps marked as official land maps certified and filed; copies made and sold

The map mentioned in section 46:24-4 of this title shall, when completed, be marked as the official land map of such county and certified as such by the commissioners, and filed in the office of such county in which transfers of lands or deeds are recorded, as a public record. The commissioners shall cause such map to be copied in such manner and in such numbers as the public demand therefor shall warrant, and deliver such copies to the treasurer of such county, to be sold by him for the benefit of such county at such price per copy as the commissioners shall fix.