§ 19. Agreement of the state. The state does hereby pledge to and
agree with the holders of any bonds or notes issued under this act that
the state will not limit or alter the rights hereby vested in the
corporation to fulfill the terms of any agreements made with the holders
thereof, or in any way impair the rights and remedies of such holders
until such bonds or notes, together with the interest thereon, with
interest on any unpaid installments of interest, and all costs and
expenses in connection with any action or proceeding by or on behalf of
such holders, are fully met and discharged. The corporation is
authorized to include this pledge and agreement of the state in any
agreement with the holders of such bonds or notes.