The board of county commissioners of any such county is hereby authorized to expend any such money provided under the provisions of this act available for the construction of a courthouse, and any money on hand in county treasury to the credit of the courthouse fund, to purchase, without bids, material for the construction of said courthouse, employ skilled and common labor and to purchase equipment and office supplies to furnish said courthouse.
Okla. Stat. tit. 19, § 769