Do you have a name? If you have his Callsign, it might have changed over time.
The FCC Database search for Callsign is only good for last two years. So if you have a name,
try a search for it. Otherwise, you're out of luck.
FCC SEARCH LINK: http://wireless2.fcc.gov/UlsApp/UlsSearch/searchAmateur.jsp;JSESSIONID_ULSSEARCH=yQK2RHGS0GXJbBy3Yy91GrJG1vFw44H5nkL9YkXRKJpQ0QWnhrWn
31 years is a long time, and this individual might be a SK now.
My novice examiner from 1960 is alive and living in California still holding his same K2 district callsign. Have his old QSL Card along with my Novice Code test saved with every license the FCC has ever issued me. At age 14, it was a very remembered event I'll never forget.