In all cities of the first class in the state of Kansas having a population of less than one hundred twenty-five thousand (125,000) and more than thirty thousand (30,000) and in all cities having a population of more than one hundred fifty thousand (150,000), it shall be lawful for the governing body of such city or cities to provide, by ordinance, for the establishment of a board of park commissioners composed of persons not members of the board of commissioners, as hereinafter provided.
K.S.A. 13-1346