Tex. Parks and Wildlife Code § 22.031: ADDITIONAL SECURITY FOR BONDS.

(a) If, after reasonable effort, the department is unable to sell the bonds, the bonds may be additionally secured by a deed of trust lien on the land and property comprising the park, or any part of it, after the department has obtained written approval of the governor.

(b) The governor may not give his approval under this section until he has obtained the advice and consent of the Legislative Budget Board.

Acts 1975, 64th Leg., p. 1405, ch. 545, Sec. 1, eff. Sept. 1, 1975.