Adult content.This special edition of of Sexual Heroes is included in the library atEndorphin High - School of BDSM (EndorphinHigh.org)GUEST BIO and LINKSSince the late 1970’s, Mark I Chester has documented his life in San Francisco’s gay sexual underground with his photography.  Mark’s work is politically provocative, sexually radical, socially aware, and artistically taboo. With a focus on portraiture, Mark documents both the men and the times, reflecting tumultuous decades in challenging images. His work was featured in the National Gallery of Australia in the 1994 exhibit titled "Don’t Leave me this Way” and at The Tacoma Art Museum in the 2015 exhibit "Art AIDS America."Twitter @SFphotoUFine art photos on InstagramGay Men's Sketch on InstagramHot Draw on InstagramHome page (may be temporarily down)Bay Area Reporter article on Street SexROBERT BLACK LINKSSupport the show