In 1963, when John Kasmin started dealing paintings, the art world was changing rapidly. Kasmin happened to sign one of the artists driving the change and hosted a solo exhibition of his work—he was just 21 and his name was David Hockney. At the time, Hockney had relocated from London to Los Angeles, where he planned to do paintings of swimming pools. For a decade Hockney hung around Hollywood, painting Beverly Hills housewives on their patios, perfect green lawns sprinkled and cut, and, of course, the work called A Bigger Splash, now one of the most recognizable paintings of the 20th century. There were other key players during that fabled time—Helen Frankenthaler, Kenneth Noland, and Frank Stella, to name a few. For this exhibition, Kasmin has unearthed his photographs from that era, long stowed away in black-backed photo albums. They capture a vivid picture of youngsters who were busy trying to change the world—or, at least, the art world. —Elena Clavarino