Back in 1990 I noticed my grandfathers name listed in the unclaimed funds for the state of Okla. I supplied the state with a death cert, probate, will and we retrieve sume porducing minerals in Cleveland county. Over the last year or so we noticed his name several times for missing funds by the Treasurors office. We put in a claim for these funds and sent in the same materials we sent before but they insist we much prove ownership and can not find the records form 1990 since the fund was handled by the tax comm. then.
The minerals are located in Okmulgee County,16-11N-12E and my grandfather came to Henryetta by wagon before statehood and settled there. Great grandfather was a district judge and served in the 2nd legislature and mom was borne and raised there.
What is the best way of proving if these minerals belong to us since them have been in this fund since the 90's and have not been claimed?