Every association shall maintain membership and stockholder records, which shall show the name and address of the member or stockholder, the status of the member as a savings account holder, or an obligor, or a savings account holder and obligor, and the date of membership or ownership of stock. In the case of members holding a savings account the association shall obtain a savings account contract containing the signature of each holder of such account or his duly authorized representative, and shall preserve such contract in the records of the association.