Okla. Stat. tit. 53 § 1.10
There is hereby created in the State Treasury of the State of Oklahoma a revolving fund to be designated as the Historical Society Revolving Fund, which shall consist of all money appropriated to said fund and all money received by the Oklahoma Historical Society from membership, sales of publications, sales of merchandise to visitors, income from duplicating and microfilm services, contributions, entry fees, gifts and endowments, excluding those gifts and endowments conditionally tendered, and other income derived from the operations of the Oklahoma Historical Society and from historic sites. The Oklahoma Historical Society is hereby authorized and directed to prepare for public distribution such historical data as may in its judgment meet the public demand; said Society shall determine the fee to be charged for each of the publications and such fee should be sufficient to cover the cost of preparing, publishing and marketing to the general public in the museums and historic sites operated by the Society.
Said revolving fund shall be a continuing fund not subject to fiscal year limitations and shall be under the control and management of the Oklahoma Historical Society and the disbursements therefrom shall be approved by the Society. Monies deposited in said revolving fund may be expended for the purpose of maintaining and operating the Oklahoma Historical Society functions and for operation of historic sites. Monies deposited in said revolving fund from entry fees collected at each participating museum or site pursuant to the entry fee pilot project shall be expended only on the museum and historic site from which the fee is collected and for the purposes outlined in Section 1.21 of this title. Purchases of merchandise for sale to visitors shall be exempt from The Oklahoma Central Purchasing Act but all other expenditures shall be made pursuant to the laws of the state and the statutes relating to the Oklahoma Historical Society. Warrants for expenditures from this fund shall be drawn by the State Treasurer based on claims signed by the approving officer of the Society and approved for payment by the Director of the Office of Management and Enterprise Services.
Okla. Stat. tit. 53, § 1.10