Mich. Comp. Laws § 453.2
Any 13 or more persons, residents of this state, and of lawful age, and members of a state grange of the patrons of husbandry of the state of Michigan, and appointed for that purpose by the executive committee of said state grange, may, under the direction of said executive committee, for the purpose of incorporating a state grange of the order of the patrons of husbandry, make and execute articles of association under their hands and seals, which articles shall be acknowledged before some officer having authority to take the acknowledgment of deeds, and shall set forth:
First, The names of the persons so associating in the first instance, and their places of residence;
Second, The corporate name by which such association shall be known in the law, and the place or places which shall be deemed to be the place of its business office;
Third, The object and purpose of such corporation, which shall be to advance the social, moral, intellectual, and material interests of the members of the corporation;
Fourth, The period of the existence of the corporation, which shall not exceed 30 years.
MCL 453.2