Mich. Comp. Laws § 123.62: County park, zoological garden or airport; land, acquisition; appropriation for improvement and maintenance.

Sec. 2.

It shall be lawful for and the several boards of supervisors are hereby authorized and empowered to make appropriations for the improvement and maintenance of such public parks, public zoological garden property, airports and landing fields, as shall have been purchased or acquired by condemnation or accepted by way of gift or devise or if used for the benefit of the public.