...which would have matched up with AR 88. But by 1968 it was shown as OK 1. Note OK 1 cosigned with US 259 and 59/270 to the state line.
By 1971 the Talimena Drive is shown as complete:
Was the Talimena Drive ever signed as OK 88, and was OK 1 ever signed along US 259 and 59/270?
UPDATE 6-6-16
I finally found my proof that at least part of the Drive was signed as OK 88:
