The first explicitly pornographic film with a plot that received a general theatrical release in the U.S. is generally considered to be Mona the Virgin Nymph (also known as Mona), a 59-minute 1970 feature by Bill Osco and Howard Ziehm, who went on to create the relatively high-budget hardcore/softcore (depending on the release) cult film Flesh Gordon. The 1971 film Boys in the Sand represented a number of pornographic firsts. As the first generally available gay pornographic film, the film was the first to include on-screen credits for its cast and crew (albeit largely under pseudonyms), to parody the title of a mainstream film (in this case, The Boys in the Band), and to be reviewed by The New York Times. In 1972, pornographic films hit their public peak in the United States with both Deep Throat and Behind the Green Door being met with public approval and becoming social phenomena.
