Mich. Comp. Laws § 453.361
Agricultural, horticultural, industrial fair, exposition society or horse fair; policemen at exhibitions, appointment, powers and duties.
That the board of managers, or executive committee of any agricultural, horticultural, industrial fair, exposition society or horse fair of this state, or any corporation organized under the laws of this state to hold any exposition or industrial fair, is hereby authorized to appoint as many citizens of this state poli…