Okla. Stat. tit. 62 § 57.34
Bonds issued under this act shall be serial coupon bonds. Said bonds and the interest thereon shall be payable at such place or places as may be designated by the State of Oklahoma Building Bonds Commission. Said bonds may be issued in one or more series, may bear such date or dates, not earlier than July 15, 1961, shall mature as follows: One Million Five Hundred Thousand Dollars ($1,500,000.00) on July 15, 1964, One Million Five Hundred Thousand Dollars ($1,500,000.00) on the 15th day of July of each year thereafter to and including July 15, 1985, and Two Million Five Hundred Thousand Dollars ($2,500,000.00) on July 15, 1986 with interest payable semiannually on January 15 and July 15 of each year, may be in such denomination or denominations, may provide for a reserve to assure prompt payment of the principal and interest of the bonds, may be in such form either coupon or registered, may carry such registration or conversion privileges, may be executed in such manner, may be payable in such medium or payment at such place or places, as may be provided by resolution or resolutions to be adopted by the State of Oklahoma Building Bonds Commission. Provided, that all such bonds maturing on and after ten (10) years from their dates may be subject to call and redemption, in inverse order of bond numbers, at par and accrued interest, with the detailed provisions for such calling and redemption thereof to be fixed by the Commission in the resolution or resolutions for the issuance of such bonds. Until such time as the State of Oklahoma Building Bonds of 1961 Sinking Fund shall be sufficient to retire all outstanding bonds and interest coupons, there shall be paid into said sinking fund during each fiscal year, from the sources hereinabove pledged such amounts as may be necessary to pay the interest and principal payable during the next succeeding fiscal year, and an amount sufficient to satisfy the reserve requirements as fixed and provided by the State of Oklahoma Building Bonds Commission in its resolution authorizing the issuance of said bonds. All bonds issued pursuant to this act shall have all the qualities and incidents of negotiable paper, and neither said bonds nor the interest earned thereon shall be subject to taxation by the State of Oklahoma or any county, municipality or political subdivision thereof.
Okla. Stat. tit. 62, § 57.34