“Iz the Wiz was a legend among graffiti artists, by almost all accounts ‘the longest-reigning all-city king in N.Y.C. history,’ as the graffiti Web site at149st.com puts it. In other words, Iz put his name, or tag, on subway cars running on every line in the system more times than any other artist. Michael Martin — Iz the Wiz — died on June 17 in Spring Hill, Fla., where he had moved a few years ago.”