Andy Warhol, Susan Sontag, John Lennon & Yoko Ono -- Jonas Mekas was well acquainted with a great many New York artists. Born in Lithuania, he came to Brooklyn via Germany in 1949 and began shooting his first experimental films there. Mekas developed a form of film diary in which he recorded his daily observations. He became the barometer of the New York art scene and a pioneer of American avant-garde cinema. Every week, starting in 1958 he published his legendary Movie Journal column in the Village Voice, writing on a range of subjects that were by no means restricted to the world of...