Okla. Stat. tit. 19 § 786
As to general obligation bonds, it shall be the duty of the officers charged by law with the levying of taxes for county purposes to levy annually an amount sufficient to pay the interest due each year on the bonds issued hereunder and at the proper time, and in addition thereto, to levy an amount sufficient to pay part of the principal as the same becomes due.
The board of control shall, at the written request of the board of county commissioners before the end of each fiscal year, file with the board of county commissioners a report of their proceedings with reference to such hospital, and shall also file a financial statement and estimate of needs, and shall at the proper time certify the amount necessary to maintain and improve said hospital for the ensuing year.
The excise board of any county in this state which operates a county hospital shall make an annual levy of not less than one-fourth of one mill on all the taxable property of the county, the proceeds of which shall be credited by the county treasurer to the county hospital fund, the purpose of this levy being to supply funds for the care of the county charity patients, and shall levy annually an amount sufficient to maintain such county hospital.
Provided, that in considering and fixing appropriations the excise board shall take into account as an item of income from sources other than ad valorem tax the gross operating receipts of the hospital for the previous fiscal year.
As to self-liquidating revenue bonds, any county may, by its board of county commissioners, issue negotiable revenue bonds of the county, for the purpose of constructing a county hospital, or making alterations or additions to a county hospital. Such revenue bonds shall be issued in the same manner as revenue bonds issued by an independent school district to construct recreational facilities under the provisions of Title 70 of the Oklahoma Statutes, Sections 821.1 through 821.9, inclusive. The bonds shall be secured by a pledge of and shall be payable from the net revenues of the county hospital. Provided, that the hospital shall be operated in the same manner as a county hospital constructed from the proceeds of general obligation bonds.
Okla. Stat. tit. 19, § 786