11x17 gel medium skin transferred to aluminum, then riveted to 16x22 steel11x17 gel medium skin transferred to aluminum, then riveted to 16x22 steel11x17 gel medium skin transferred to aluminum, then riveted to 16x22 steel11x17 gel medium skin transferred to aluminum, then riveted to 16x22 steel11x17 gel medium skin transferred to aluminum, then riveted to 16x22 steel11x17 gel medium skin transferred to aluminum, then riveted to 16x22 steel11x17 gel medium skin transferred to aluminum, then riveted to 16x22 steel11x17 gel medium skin transferred to aluminum, then riveted to 16x22 steelCyanotypeCyanotype - black tonedCyanotype, 2 step gum  bichromate, sepiahome made three lens pinhole camera. salt print image