Mich. Comp. Laws § 600.2130

Sec. 2130. Printed copies of schedules and classifications and tariffs of rates, fares and charges, and supplements thereto, filed with any federal or state regulatory commission, which show respectively the number assigned to them by such commission which may be stated in abbreviated form, and an effective date, may be received in evidence without certification, and shall be presumed to be correct copies of the original schedules, classifications, tariffs, and supplements on file with such commission.