Mich. Comp. Laws § 600.2131: Written instruments; proof; acknowledgment.

Sec. 2131.

Every written instrument, except promissory notes and bills of exchange, and except the last wills of deceased persons, may be proved or acknowledged in the manner now provided by law, for taking the proof or acknowledgment of conveyances of real estate, and the certificate of the proper officer endorsed thereon, shall entitle such instrument to be received in evidence on the trial of any action, with the same effect, and in the same manner, as if such instrument were a conveyance of real estate.