Keep Your Mouth Shut : Graffiti Art & Street Culture in Chicago and Beyond, Hardcover by Flex Kym (COR); Emte (COR), ISBN 0764366874, ISBN-13 9780764366871, Brand New, Free shipping in the US

A raw collection of photos and stories spotlighting the artistic process and dangerous adventures of a Chicago graffiti artist as he creates unsponsored works of art around the world