King Adz began his career as an ad man, as his moniker suggests, and transformed into a chronicler of street art, the sometimes temporary, often illegal pieces that bring humor or beauty or political commentary to otherwise unadorned city surfaces. In Street Knowledge, he presents an A-to-Z guide to the form, capturing stars like Banksy and Obey in exclusive interviews, early pioneers, and related art forms, from hip-hop to fashion. Below, ahead of Zócalo’s event tonight exploring street art, a selection of photographs from Street Knowledge.

Art by Eelus.

Art by Roadsworth.

Art by Miss Tic.

*All photos courtesy Overlook Press.