Okla. Stat. tit. 19, § 787

Out of the proceeds of said bonds the county commissioners shall proceed to purchase a suitable site for the erection of such county hospital and to erect said building on said site, or to alter, add to, or enlarge existing hospital buildings in accordance with the plans and specifications to be prepared by an experienced architect and submitted to said board of county commissioners, which plans and specifications shall have been approved by the board of control hereinafter created. Said board of control shall be responsible for selecting an experienced licensed architect.