Iowa Code § 569.7: Execution of deeds and leases.

The said governing body may appoint its chairperson, president, or other member to execute and acknowledge, for and on behalf of the state, county, or municipality, leases and deeds of conveyance, but said instruments when executed shall be approved by the said body and said approval spread upon its minutes with the yea and nay vote thereon. A transcript of said minutes certified by the secretary of said body shall be entitled to be recorded in the same manner as the approved instrument is entitled to be recorded.