The letter M of the alphabet is on display at the corner of 26th and Folsom of the Mission District which is painted by muralist Victor Reyes , Thursday June 10, 2010, in San Francisco, Calif.

In New York, bands of urchin-artisans took up Cornbread’s style—stick letters, tags—and made it an art form. ... A Graffiti Alphabet,” a Baby Einstein-like book for the streetwise set.