70 ILCS 1205/8-22

Whenever a park district owns any personal property that in the opinion of three-fifths of the members of the board then holding office is no longer necessary, useful to, or for the best interests of the park district, three-fifths of the park board then holding office, at any regular meeting or at any special meeting called for that purpose, by ordinance, may authorize the conveyance or sale of that personal property in any manner that they may designate, with or without advertising the sale.