Okla. Stat. tit. 47, § 587

A. There is hereby created a petty cash fund not to exceed One Hundred Dollars ($100.00) for the Oklahoma Used Motor Vehicle, Dismantler, and Manufactured Housing Commission, which may be expended for small authorized expenses of the Commission. B. The Director of the Office of Management and Enterprise Services is authorized to prescribe forms, systems and procedures for its administration. The petty cash fund may be reimbursed from time to time by the filing of proper claims, accompanied by valid receipts for expenditures made.