Okla. Stat. tit. 68, § 68-2358.5A: Obligations issued by state and certain state agencies

exempt from taxation.

A. All bonds, notes, debentures, evidences of indebtedness,

lease purchase agreements, certificates of participation, commercial

paper, or other obligations issued by the State of Oklahoma, the

Oklahoma Capitol Improvement Authority, the Oklahoma Municipal Power

Authority, the Oklahoma Student Loan Authority, and the Oklahoma

Transportation Authority, the income therefrom, including, without

limitation, any profit made on the sale thereof, and the transfer

thereof, including, without limitation, estate or inheritance taxes,

shall at all times be free from taxation within this state.

B. The provisions of this section shall be supplemental to, and

not limiting or restrictive of, any law involving the taxation of

such obligations within the State of Oklahoma.