Starting out as a sculptor in New York in the 1970s, Chalfant turned to photography and film to do an in-depth study of hip-hop culture and graffiti art. One of the foremost authorities on New York subway art,and other aspects of urban youth culture, his photographs record hundreds of ephemeral, original art works that have long since vanished. His archive of over 1,500 photographs is represented exclusively by Eric Firestone Gallery, New York and East Hampton. Exhibits of his photos include the O.K. Harris Gallery and the landmark ‘New York-New Wave’ show at P.S. l, and important galleries and museums in Europe. He has co-authored the definitive account of New York graffiti art, Subway Art (Holt Rinehart Winston, N.Y. 1984) and a sequel on the art form’s world-wide diffusion, Spray Can Art (Thames and Hudson Inc. London, 1987).