Bill Osco is a film producer and director whose 1970 film Mona was the first erotic art film to receive a national theatrical release in the United States (1970). The film is considered the watershed event that inaugurated the Golden Age of erotic art films in the United States. Mona was the paradigm for theatrically released erotic art films.Starting in 1987, but before 1970, Osco directed six films and two shorts, two of which had erotic themes.