 Four years before the death of her husband Simon in June 1993, he resigned as President of Norton Simon Museum in Pasadena and Jennifer Jones Simon was appointed Chairman of the Board of Trustees, President and Executive Officer.In 1996, she began working with architect Frank Gehry and landscape designer Nancy Goslee Power on renovating the museum and gardens.She remained active as the director of the Norton Simon Museum until 2003, when she was given emeritus status.