What began as a museum about the desert has evolved into an oasis for the arts with Modern and Contemporary American works by artists such as Robert Motherwell, Helen Frankenthaler, Duane Hanson, and Mark di Suvero; Contemporary California painting and sculpture by Sam Francis, Edward Ruscha, Robert Arneson, Nathan Oliveira, and others; Studio Art Glass by Dale Chihuly, Howard Ben Tr??, and Willia