http://www.gaycityusa.com/HANKYCODES.htm http://www.queerculturalcenter.org/Pages/HalPages/Gaysemi_1.html
Gay Semiotics a photographic study of visual coding among homosexual men by Hal Fischer http://www.queerculturalcenter.org/Media/HalImgs/Fig_2two.jpg -- Michael Pugliese