Okla. Stat. tit. 67, § 67-23: Effect of record of abstracts

Said abstracts, copies, minutes and extracts, or said copies

thereof, if so bought as aforesaid, shall thereupon be placed in the

office of the register of deeds of such county, to be copied, and

arranged in such form as the county commissioners shall deem best

for the public interest, and in case the originals have been lost or

destroyed, or are not in the power of the party asking to use the

same on any trial or other proceeding, copies of the same or any

part thereof, duly certified by the register of deeds of such

county, shall be admissible as evidence in all the courts in this

state.