The 9th Street Art Exhibition of Paintings and Sculpture is the official title artist Franz Kline hand-lettered onto the poster he designed for the Ninth Street Show. Now considered historic, the artist-led exhibition marked the formal debut of Abstract Expressionism, and the first American art movement with international influence. The School of Paris, long the headquarters of the global art market, typically launched new movements, so there was both financial and cultural fall-out when all the excitement was suddenly emanating from New York. The postwar New York avant-garde, artists like Willem de Kooning and Jackson Pollock, would soon become "art stars," commanding large sums and international attention. The Ninth Street Show marked their "stepping-out," and that of nearly 75 other artists, including Harry Jackson, Helen Frankenthaler, Michael Goldberg, Joan Mitchell, Grace Hartigan, Robert De Niro Sr., John Ferren, Philip Guston, Elaine de Kooning, Lee Krasner, Franz Kline, Ad Reinhardt, David Smith, Milton Resnick, Joop Sanders, Robert Motherwell, Barnett Newman, and many others who were then mostly unknown to an art establishment that ignored experimental art without a ready market.

Franz Kline was an American painter. He is associated with the Abstract Expressionist movement of the 1940s and 1950s. Kline, along with other action painters like Jackson Pollock, Willem de Kooning, Robert Motherwell, John Ferren, and Lee Krasner, as well as local poets, dancers, and musicians came to be known as the informal group, the New York School. Although he explored the same innovations to painting as the other artists in this group, Kline's work is distinct in itself and has been revered since the 1950s.