A champion of architectural preservation and other visual arts, he chaired the Andy Warhol Foundation for the Visual Arts and authored 15 books, including "Here at The New Yorker" and the iconoclastic Frank Lloyd Wright biography "Many Masks".
A champion of architectural preservation and other visual arts, Gill joined Jacqueline Kennedy's coalition to preserve and restore New York's Grand Central Terminal. He also chaired the Andy Warhol Foundation for the Visual Arts and authored 15 books, including "Here at The New Yorker" and the iconoclastic Frank Lloyd Wright biography "Many Masks".