By the 1970s magazines containing images of the pubic area became increasingly common. Paul Raymond launched in the UK "Men Only" in 1971, and then "Club International" in 1972. "Playboy" was the first to clearly show visible pubic hair in January 1971. The first full frontal nude centerfold was "Playboy's" Miss January 1972. In 1974, Larry Flynt first published "Hustler" in the US, which contained more explicit material. Some researchers have detected increasingly violent images in magazines like "Playboy" and "Penthouse" over the course of the 1970s, with them then returning to their more upscale style by the end of the decade. Paul Raymond Publications launched "Escort" in 1980 in the UK, "Razzle" in 1983 and "Men's World" in 1988.