Okla. Stat. tit. 18, § 549

Any corporation heretofore or hereafter organized under the laws of the State of Oklahoma for charitable or educational purposes may maintain and carry on any and all kinds of business enterprises that an individual or corporation may lawfully carry on under the laws of the State of Oklahoma as auxiliary enterprises and may do so either directly or through any other corporation or corporations, a majority of whose stock it lawfully owns, in order that additional funds may be obtained with which to carry out only the charitable or educational purposes of such corporation.