70 ILCS 1275/4
Whenever there is filed in the office of the circuit clerk of the county in which the park district or the major portion thereof is located, a resolution of the board of the district or a petition signed by at least 50 legal voters of the district, asking that a referendum be held to authorize the issuance of such bonds for the purpose of establishing playgrounds or athletic fields, with grandstands or other seating facilities, as Living War Memorials, the circuit court, if it determines the petition to be in conformity with law, shall certify the question to the proper election officials, who shall submit to the legally qualified voters of such district the question of issuing bonds for such purpose, to the amount named in the resolution or petition, at a regular election in accordance with the general election law.
70 ILCS 1275/4