Mo. Rev. Stat. § 305.205: Revenue bonds authorized, first class counties.

The governing body of any county of the first class is authorized to pay the purchase price or the award of compensation or damages, as provided for in section 305.200, by the issuance of revenue bonds for the taking of any real or personal property or any easement or use thereof for an airport or a landing field or an addition thereto or for any improvement or improvements on the airport, landing field, or any addition thereto.