I have two more spelling variations: Cassner and Kassner.
Regardless of the last name spelling do you know of a Rheta? Her parents were Doris and Harold and they lived in Dallas. I believe that Doris was the sister of August Aye (my great, great grandfather)
I am not sure of any of this. I just know that I used to correspond with Rheta once in a while but then she stopped writing. I'm sure she's probably gone now but I'd like to know for sure. And I'd like to know of any other family members.