R.I.P. 1978?

On “In Memory” list of Ten Year Reunion booklet (1979). No newspaper obituary or death notice found, but mentioned as “the late John Harvey” in his mother’s 2002 obit.

Possible record in Social Security Death Index:

Name: John Harvey
State of Issue: New Jersey
Date of Birth: Wednesday December 19, 1951
Date of Death: December 1978
Est. Age at Death: 26 years, 11 months