Okla. Stat. tit. 18, § 18-588
Benevolent corporations may own real or personal property
Any charitable corporation, including chartered fraternal, grand
and subordinate lodges and societies, are hereby empowered to
receive, either by way of gift, purchase, grant, devise or by will,
real or personal property, and to hold the same, and to dispose of
the same in the carrying out of the purposes of the corporation,
society or lodge.