Michigan Compiled Laws, Chapter 53. Register of Deeds § 53.142

Sec. 2. Whenever the board of supervisors of any county of this state shall hereafter desire to act under or by virtue of the authority aforesaid, the board of supervisors of such county shall be ordinance or by resolution duly adopted make provision for the purchasing or making, establishing and maintaining of such system or systems of records, indexes, books, files, and methods for the preservation and use of the same as shall meet the requirements of that particular county. The ordinance or resolution may provide for tract index, card index, cross-reference index or system or any other index or reference system or systems as shall in the judgment of said board of supervisors best meet the needs of the county or community to be served.