Okla. Stat. tit. 12, § 12-856: Receiver entitled to possession of property

The court or judge may order the delivery, to the receiver, by

the judgment debtor, or any other person in whose possession the

same may be, of any notes, bills, accounts, contracts, books or

other evidence of indebtedness or right in action, of the judgment

debtor, and may enforce such order by attachment, as for a contempt.