Mich. Comp. Laws § 397.209

Sec. 9. Any person desiring to donate money, personal property, or real estate for the benefit of a library has the right to vest the title to money or real estate donated in a governing board created under this act, to be held and controlled by that board when accepted according to the terms of the deed, gift, devise, or bequest of the property. The governing board shall be considered a special trustee of money, personal property, or real estate donated under this section.