Okla. Stat. tit. 57, § 509.3
If funding is provided by the Legislature for the transfer of a portion of the land and facilities at Western State Psychiatric Center at Fort Supply, Oklahoma, to the Department of Corrections, the Department of Corrections shall maintain the following buildings at the correctional institution at Fort Supply, Oklahoma, as historical sites:
9. The Green House.
Management of these historical buildings shall be the responsibility of the Oklahoma Historical Society.
Laws 1988, SB 403, c. 310, § 15, emerg. eff. July 1, 1988; Amended by Laws 1993, SB 252, c. 323, § 7, emerg. eff. June 7, 1993.