sentences:  Further shaping experiences include working as Acting Keeper of the Sainsbury Centre for Visual Arts in Norwich, England, as well as the Head of the Design and Installation Department for the Fine Arts Museums of San Francisco at both the M.H.de Young Memorial Museum and the California Palace of the Legion of Honor.In 1980, Sexton opened his own lighting and museum design firm, George Sexton Associates, based in Washington, DC, with satellite offices in Norwich, England and New York City.