N.Y. General Associations Law § 12: Action or proceeding by unincorporated association

§ 12. Action or proceeding by unincorporated association. An action

or special proceeding may be maintained, by the president or treasurer

of an unincorporated association to recover any property, or upon any

cause of action, for or upon which all the associates may maintain such

an action or special proceeding, by reason of their interest or

ownership therein, either jointly or in common. An action may likewise

be maintained by such president or treasurer to recover from one or more

members of such association his or their proportionate share of any

moneys lawfully expended by such association for the benefit of such

associates, or to enforce any lawful claim of such association against

such member or members.