James Bedford’s freezing in January 1967 is usually regarded as the first true cryonic suspension, done immediately after legal death under controlled conditions which, though primitive by today’s standards, may have opened the possibility of eventual reanimation. Yet there was an earlier freezing that, while more problematic from the standpoint of viability, was nonetheless important in the beginning cryonics movement.

Continued here:
Mike Perry – A Freezing Before Bedford’s (2004)