Okla. Stat. tit. 19, § 19-287: Indexes to be kept

Each register of deeds shall keep an index of deeds direct and

inverted, and an index of mortgages direct and inverted, in his

office. The index direct and inverted, of deeds and mortgages,

shall be divided into columns, with heads to the respective columns,

as follows to-wit:

GRANTOR - GRANTEE

DATE OF FILING WHERE RECORDED DESCRIPTION OF PROPERTY

M. D. Y. A.M. P.M. Book Page Lot Blk. Qr. Sec. Tp. R.

GRANTEE - GRANTOR

DATE OF FILING WHERE RECORDED DESCRIPTION OF PROPERTY

M. D. Y. A.M. P.M. Book Page Lot Blk. Qr. Sec. Tp. R.

Remarks

He shall enter in alphabetical order in the direct index of

deeds and mortgages the names of the grantors and in the inverted

index of deeds and mortgages the names of the grantees in

alphabetical order, and whenever any mortgage bond or other

instrument has been released or discharged from record, according to

law, the register shall immediately note in both indexes under the

column headed "Remarks," and opposite to the appropriate entry, that

such instrument has been satisfied. He shall also keep an index,

direct and inverted, of the miscellaneous records in the same form

as the index of deeds and mortgages.