From Wikipedia: "He had his studio in the Lower East Side, on 22nd Street. Stefanelli soon joined the "Downtown Group" which represented a group of artists who found studios in lower Manhattan. Franz Kline introduced Stefanelli to 'The Artists’ Club’ located at 39 East 8th Street. Joe Stefanelli was chosen by his fellow artists to show in the Ninth Street Show held on May 21-June 10, 1951. The show was located at 60 East 9th Street on the first floor and the basement of a building which was about to be demolished: "The artists celebrated not only the appearance of the dealers, collectors and museum people on the 9th Street, and the consequent exposure of their work but they celebrated the creation and the strength of a living community of significant dimensions."
Joe Stefanelli participated in 1951 and from 1954 to 1957 in the invitational New York Painting and Sculpture Annuals including the Ninth Street Show. These Annuals were important because the participants were chosen by the artists themselves."