Mich. Comp. Laws § 399.156

Sec. 6. (1) The commission shall review, modify if necessary, and approve appropriate text, and review and approve the location for each marker. The commission shall exercise its judgment and discretion in revising and approving proposed marker text and may advise the department on matters pertaining to applications and related decisions. The department shall issue an official site number for each historic resource or site designated for placement of an official Michigan historical marker. (2) An official Michigan historical marker shall not include or mention the name of a living commissioner or any other living state official. (3) An official Michigan historical marker shall include the words "Michigan history center and Michigan historical commission". To comply with this subsection, the department may alter a marker that does not include these words. (4) An official Michigan historical marker may reference Michigan as the "Great Lakes State" and shall meet all of the following requirements: (a) Be dark green with gold lettering. (b) Have a logo or seal with a wolverine emblem in its upper area or crest. (c) Include the words "registered Michigan historic site". (5) The department may enter into a written agreement with another state, local, or federal agency regarding the placement of an official Michigan historical marker on property under the jurisdiction of the agency. The agreement may address security, payment for the marker, and other appropriate matters.