Okla. Stat. tit. 65 § 157
It shall be the duty of the commission to prepare an annual budget.
Each county and city establishing a city-county library system, as herein provided, at the beginning of each fiscal year or as soon thereafter as may be practicable, shall agree upon the necessary contributions to be made by each for the establishment, operation and maintenance of the city-county library system, appropriate such funds as may be agreed upon, and combine said funds with funds from any other source. Periodically, as may be agreed upon, the city and county shall contribute their appropriated funds to a common fund upon claims therefor being filed by the commission with the governing body of the city and with the board of county commissioners. The contributions shall be made by warrants, issued by the appropriate officers and made payable to the city treasurer or county treasurer, as may be agreed upon by the city and county. Said common fund shall be maintained as a depository account with either the city treasurer or county treasurer, as may be agreed upon, and shall be disbursed upon vouchers drawn by such officer or employee of the commission as may be agreed upon by the city and county. Said vouchers shall be issued only in payment of claims which have been executed in the manner prescribed by law for claims against the county or the city and before delivery to the payee, shall be registered with the city treasurer or county treasurer, as the case may be.
The officer or employee of the commission designated by the city and county to draw vouchers in payment of such claims shall be bonded in an amount as may be required by the city and county, but not less than Twenty Thousand Dollars ($20,000.00). The designated officer or employee shall be governed by the same statutory provisions relating to depository accounts as apply to county officials generally. Nothing contained herein shall be construed as exempting from the application of the general statutes relating to appropriations the funds contributed by the city and county to this common fund.
Income of the city-county library system from fines, fees, sales of personal property, and other miscellaneous sources, excluding income from sales of real property, shall not be considered general revenue of either the city or the county. It shall be deposited promptly with the city treasurer or the county treasurer, as the case may be, and shall be credited directly to the depository account of the commission without appropriation. Income from this source shall constitute a revolving fund which shall not be subject to fiscal limitations and which may be expended by the commission for the replacement or repair of books and other personal property other than motor vehicles.
In the event funds are made available for library purposes in the county, pursuant to the provisions of Section 10A of Article X of the Oklahoma Constitution, all or any part of the cost of establishing, maintaining and operating the city-county library system as set forth in the powers granted to the commission in Section 158 of this title, and otherwise, may be paid with such funds, and the city-county library commission is authorized hereby to administer the expenditure of such funds in the same manner as herein provided for expenditure of funds appropriated from general revenue for library purposes.
Okla. Stat. tit. 65, § 157