Hi Donaldo,
That's the late Roland Baltes of Redondo Beach, CA. He was a local in SoCal and flew Carrier, Scale and some other events. Later he flew R/C Scale too.
I shadowed him for that whole day you took that shot because he didn't have anyone to launch for him and he asked me. When his flight came up, he asked some adult to launch for him!
The model hung in the old Jet Hangar Hobbies shop in Cerritos for a long time. I wish I knew what happened to it after the shop closed about 15 years ago.
The model flew quite well, fast but very controllable and of course was throttled so it made nice landings and touch and goes. It had a Super Tigre 40 R/C with a 9x6 IIRC, and I liked how it approached to land with the nose really high, ran around the circle on three wheels and then rotated nose high again to take off.
Thanks for the trip back to Willow Grove.
Chris...