The county records commission shall be charged with the responsibility of determining which county records shall be permanently preserved because of their historical value, and which records may be destroyed or otherwise disposed of after they have been microfilmed. No record of the probate office or circuit court shall be destroyed unless otherwise permitted by law. The commission shall classify the different types of records accordingly. No county official shall cause any county records to be destroyed or otherwise disposed of without first obtaining the approval of the county records commission. Before destroying any records, the disposal of which by a county official has been approved by the commission, such records shall be offered to the Huntsville Public Library, State Department of Archives and History, the local historical association, and the Huntsville Burritt Museum in such order as the records commission may determine. The Madison County Board of Commissioners is required to expend the county general funds found to be necessary to build, lease, or remodel a suitable building to retain old records. The building shall conform to standards for this type of building as recommended by the United States Bureau of Standards.