The governing body of any city which, prior to the effective date of this act, has authorized, pursuant to the provisions of Kan. Stat. Ann. § 12-1302, and amendments thereto, the issuance of general obligation bonds of the city in the amount of $75,000 for the purpose of swimming pool and other park improvements is hereby authorized to issue and sell such bonds in the manner provided by law without approval by election and without executing a nonlitigation certificate required by Kan. Stat. Ann. § 10-108a, and amendments thereto. All proceedings for the issuance of such bonds and all bonds issued pursuant thereto are hereby validated and confirmed. The total amount of bonds issued under authority of this act shall not exceed the amount of $75,000.