In the 1986-87 Winter callbook I found two people with the first name of John:
John C Tomlinson - KA5QYR (listed on QRZ.Com)
RT 3 Box 230 (1986-87 address)
Sweetwater,TX 79556
&
John M Flickinger - W5WNI
304 Normandy (1986-87 address)
Sweetwater,TX 79556
I hope one of these is/was him.