Perry B. Gregg, b 17 May 1915 TX; d 3 Feb 1975 Fresno Co, CA; last residence Kingsburg, Fresno Co, CA; SS card issued in TX; 59 yrs old.
"Possible" match from TX Dth Idx Online and SSDI:
Annie R. Gregg, b 24 Oct 1879; d 23 Feb 1979 Grayson Co, TX; last residence Whitesboro, Grayson Co, TX; SS card issued in TX; single [also can mean widowed, divorced or separated.If she was widowed, Birly probably died too early to be on TX Dth Idx, it covers 1964-1998].
If this is your Annie, you might check the Grayson Co, TX archived records site.There is a Mollie Forrester b 1852 and Tom b 1882 buried in cemetery in Denison.Could they be mother and brother to your Annie?There are several Raders buried in a couple of cemeteries, too.
Perry B. Gregg and Grace Alice Green had a daughter in 1938 in Grayson Co, TX.I think Grayson Co, TX is a place you should search for your family line.Post query there, too.