I still believe the CSR Death Register card we've uncovered should be sufficient to obtain a stone for him
However, the VA may require ID of the CSR file from which it was found where l believe it would be found in the records of his 13lh Ark. Cav.
I would suggest a check of his unit recoreds found in the OR Supplement .
Also visiting the Archive sat Little Rock or Wash. DC.
And then Ive found Cemetery Staff very helpful as well as local SCV Camps.
Good Hunting,
Georg Martin