Okla. Stat. tit. 62, § 62-57.310: Investment in bonds issued under act - Use as

collateral security.

Any bank, trust or insurance company organized under the laws of

Oklahoma may invest its capital, surplus and reserve funds and other

funds under its control in bonds issued under the provisions of this

act. The officers having charge of any fund of the State of

Oklahoma, or any department, agency, or institution thereof or any

sinking fund of any county, city, town, township, board of education

or school district may invest such funds in bonds issued under the

provisions of this act. Such bonds shall also be approved as

collateral security for the deposit of any public funds and for the

investment of trust funds.