Okla. Stat. tit. 36, § 36-7104: Donations, deposits or bequests in trust

Donations, deposits or bequests may be made in trust by mutual

agreement between the cemetery and lot owner or lot owners, for the

special care of specified lots, monuments or mausoleums in any such

cemetery, and such funds shall be invested in like manner as the

Perpetual Care Fund, but a separate account shall be kept of each

amount so deposited, donated and bequeathed and only the income

derived from such funds shall be used in the care, maintenance and

repair of such lots, monuments and mausoleums, unless otherwise

provided by the donor.