305 ILCS 5/10-13.4

Proof of records.) The books, papers, records and memoranda of the Illinois Department or of the administrative enforcement unit, or parts thereof, may be proved in any hearing, investigation, or legal proceeding by a photostatic or other copy thereof under the certificate of the Director of the Illinois Department. Such certified copy shall, without further proof, be admitted into evidence in the hearing before the Illinois Department or in any other legal proceeding.