In the early 1980s, New York is the epicenter of the graffiti and street art scenes, from which a global cultural revolution emanates. In the middle of it all is Swiss art historian and lawyer Thomas Christ with his camera. He follows the painted subways to the Bronx to photograph them and meets there young sprayers who want to escape the precarious conditions: They join together to form criminal gangs, which, however, do not strive for money but for fame. After his return, Christ presented his precise paintings and his lucid reflections on the background of illegal graffiti in the publication "Subway Graffiti" (1984) and in an exhibition at the Kunstgewerbemuseum in Basel. Shortly thereafter, in the follow-up publication "Urban Graffiti" (1987), Christ also deals with the work of Richard Hambleton and Keith Haring and is thus one of the first to address the relationship and difference between graffiti and street art: In contrast to Subway Graffiti, the artistic appropriation of public space here takes place with the knowledge of art as an operating system. A new publication brings together and expands upon these two contemporary documents about a crucial high period of graffiti and street art in New York in one volume. "Instant Recognition" includes "Subway Graffiti" and "Urban Graffiti," supplemented by never-before-seen photos and documents from Thomas Christ's private archive. In a new text and an interview, Christ looks back on the events of the time and recounts his memories and impressions.