David O'Boyle stands above Robert Bartholomea after their wrestling match in the 1969 AMG film Gladiator's Slave. The film was promoted at least once a year in Physique Pictorial through 1977! It must have been a good seller.
According to Mizer the guys became close friends and travelled the country hopping freight trains. I read somewhere that David's dance card was always filled whenever he was back in LA.
