Okla. Stat. tit. 74 § 76c
There is hereby created in the State Treasury a revolving fund for the Office of Management and Enterprise Services, to be designated the "Postal Services Revolving Fund". The fund shall be a continuing fund, not subject to fiscal year limitations, and shall consist of all monies received by the Office of Management and Enterprise Services for providing postal services. All monies accruing to the credit of said fund are hereby appropriated and may be budgeted and expended to provide postal and interagency mail services and expenses the Office of Management and Enterprise Services incurs to support postal services operations. Expenditures from said fund shall be made upon warrants issued by the State Treasurer against claims filed as prescribed by law with the Director of the Office of Management and Enterprise Services for approval and payment.
Okla. Stat. tit. 74, § 76c