During a career spanning half a century, Ileana Sonnabend (1914-2007) helped shape the course of postwar art in Europe and North America. A legendary gallerist and collector, Sonnabend was renowned for her ambassadorial role in bringing new art across the Atlantic, and was instrumental in introducing American Pop art and Minimalism to Europe and Italian Arte Povera to the United States. She also sought out and supported some of the most challenging Conceptual, new-media, and performance-based art of the 1970s. This book includes works by forty-one artists, including Vito Acconci, John Baldessari, Mel Bochner, Jasper Johns, Jeff Koons, Mario Merz, Robert Morris, Robert Rauschenberg, and Andy Warhol. Ileana Sonnabend: Ambassador for the New reveals the astounding scope of Sonnabend's taste and salutes her commitment to introducing groundbreaking art to the public.