Alfred Leslie, Notan Study for The Killing of Frank O'Hara, (1967), Watercolor on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33174

Alfred Leslie, Notan Study for The Killing of Frank O'Hara, (1967), Watercolor on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33193

Alfred Leslie, Constance Leslie, 1976, Pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35007