The inhabitants of the City of Richmond Heights, within the corporate limits as now established or as hereafter established in the manner provided by law, shall continue to be a municipal body politic and corporate in perpetuity, under the name of the City of Richmond Heights. The present corporate limits are set forth in Ordinance No. 1500 of the City of Richmond Heights, enacted 3/8/37; a map showing these limits is recorded in Plat Book 33, page 20, of the office of the St. Louis County Recorder of Deeds.