70 ILCS 1505/18
The original districts superseded by, or consolidated with, the Chicago Park District shall remain liable for the payment of all bonded indebtedness of each such districts as if not superseded by the Chicago Park District. The commissioners of the Chicago Park District shall constitute a board for the purpose of determining and certifying and they shall determine and certify, to the county clerk the amount of tax required yearly for the purpose of paying the interest and principal of such bonded debt, which tax shall be extended by the county clerk against all property embraced within the original district, as if it had not been superseded by or consolidated with the Chicago Park District. The commissioners of the Chicago Park District shall have the power to dispose of authorized and unsold bonds of superseded park district; to provide for the application of the proceeds thereof and to levy a tax for the payment thereof in the same manner as the commissioners of such superseded districts were empowered so to do. The proceeds of the sale of such bonds shall be expended only for the purposes for which such bonds were originally authorized.
Provided, however, the liability of any superseded park district upon its bonds shall not continue to such bonds that may be refunded by the commissioners of the Chicago Park District under "An Act authorizing the Chicago Park District to assume and become liable for the payment of certain indebtedness of superseded park districts and to issue its bonds to refund and/or fund same, legalizing such indebtedness and providing for the levy and collection of taxes for the payment of such bonds," enacted at the regular session of the 59th General Assembly.
70 ILCS 1505/18