Ken Gonzales-Day discusses Surface Tension: Murals, Signs, and Mark-Making in Los Angeles, a photographic journey to map out the city and make visible the larger cultural, socio-economic, and political forces that have shaped the place we have come to call Los Angeles.

A precursor to the hardcore pornography and the radical underground presses that erupted after Stonewall, photographer Bob Mizer's landmark "beefcake" quarterly Physique Pictorial was initially produced under the guise of an art and fitness journal. It is now considered to be one of the first, if not the very first of its kind: a widely distributed magazine that celebrated the male form for its aesthetic pleasures, and whose intended audience was gay men.