 Some sources have recognized him as a graffiti pioneer and also for originating the "squiggly lines" style of outlining graffiti.SJK 171 attended the High School of Art and Design along with a number of other early graffiti artists, and began writing in 1968 under the name SJK 171.His work was the first triple outline, large colorful letters to appear on the 1 Line of the New York City Transit System.