35 ILCS 200/19-10

The township supervisor shall, within six business days after approval of the township collector's bond, file the bond, with the approval endorsed thereon, in the office of the county recorder, who shall record the bond, including the oath, in a book for that purpose. When recorded, the oath and bond shall be filed by the county recorder in the office of the county clerk. A bond, when so filed for record, shall be a lien against the property of the township collector until he or she has complied with the conditions thereof.