70 ILCS 1515/4
Refunding and/or funding bonds shall be authorized by ordinance and may be made registerable as to principal and shall be of the form and denomination, payable at the place and bear such date as may be determined by the commissioners and shall mature within not to exceed 20 years from their date or, for bonds issued after the effective date of this amendatory Act of the 93rd General Assembly, within not to exceed 30 years from their date, but may be made callable on any interest payment date at the price of par and accrued interest after notice shall be given by publication or otherwise and at the time or times and in the manner as may be provided in the bond ordinance. Such bonds may bear interest at the rate of not to exceed six per cent per annum payable at the time and place provided in the bond ordinance.
The ordinance authorizing such refunding and/or funding bonds shall prescribe all details thereof and shall provide for the levy and collection of an annual tax upon all the taxable property within the Chicago Park District sufficient to pay the principal thereof and interest thereon as it matures which tax shall be in addition to and exclusive of the maximum of all other taxes authorized to be levied by said commissioners.
A duly certified copy of the bond ordinance shall be filed in the office of the County Clerk of Cook County and shall constitute authority for the extension and collection of such bond and interest taxes as required by the constitution.
Refunding and funding bonds shall be signed by the facsimile signature of the president with like effect as if signed with his genuine signature and shall be signed by such other officers of the Chicago Park District as may be designated in the bond ordinance.
The validity of any refunding and funding bonds shall remain unimpaired although one or more of the officers executing same shall have ceased to be such officer or officers before delivery thereof.
70 ILCS 1515/4