765 ILCS 45/2
In any county of this state where the records have been burned or destroyed, as specified in the last section, and any map, plat, deed, conveyance, contract, mortgage, deed of trust, or other instrument in writing affecting real estate in such county, has been recorded in any other county of this state, certified copies of the same, heretofore or hereafter made, may be recorded in such county where the records have been so burned or destroyed, and in recording the same the recorder shall record all certificates attached thereto; and if any of such certificates show the previous recording of the same in the county where the records have been burned or destroyed, the date of filing for record, in such county appearing in said certificate so recorded shall be deemed and taken as the date of the record thereof. And copies of any such record, so authorized to be made under this section, duly certified by the recorder of any such county, under his seal of office, shall be received in evidence, and have the same force and effect as certified copies of the original record.
765 ILCS 45/2