David Hockney, Kas and Jane, 1965, crayon on paper, 17 x 13 3/4 inches framed

David Hockney, Untitled III, 2009, charcoal on paper, 26 x 40 inches

David Hockney, Gregory Sleeping, 1978, pen and ink on paper, 14 x 16 7/8 in

David Hockney, Mo, Paris, 1973, ink on paper, 16 7/8 x 13 7/8 inches