Peter Gabel (son of panelist Arlene Francis and Martin Gabel), who appeared as the first 'mystery guest', was able to stump everyone with his summer job 'line' of work (guide at New York World's Fair). In September, he would start attending Harvard University together with panelist Bennett Cerf's son, Christopher Cerf.
At the time of this appearance, 17-year-old Sue Lyon was married to actor and future screenwriter Hampton Fancher, who adapted the science fiction novel "Do Androids Dream of Electric Sheep?" (1968) into Blade Runner (1982).