section 703.2


703.2 Where any summons, notice or other process is required to be or may be served on an organization, and no other method of service is provided, service may be effected by delivery (a) in the case of a municipality, to the mayor, warden, reeve or other chief officer of the municipality, or to the secretary, treasurer or clerk of the municipality; and (b) in the case of any other organization, to the manager, secretary or other senior officer of the organization or one of its branches.