Saville Sax (July 26, 1924 – September 25, 1980) was the Harvard College roommate of Theodore Hall, who recruited Hall for the Soviets and acted as a courier to move the atomic secrets from Los Alamos to the Soviets.

Bluma and Bernard were both born in Russia, of Jewish ancestry.

[3][4] Saville was introduced to Soviet agents by his mother, Bluma, who worked for a Communist front organization called Russian War Relief.

[5][6] Sax went by the cover name "Oldster", and periodically traveled to New Mexico to collect information from Hall.

[9] After drifting from job to job, Saville ended up teaching "values clarification" in a Great Society funded education program called NEXTEP,[10] when he was "something of an adult hippie, disheveled in his personal habits and given to LSD and other hallucinogenic drugs" and "openly boasted of his role in the [atomic] spying".