Sol LeWitt,Wall Drawing 824, A black square divided in two parts by a wavy line. One part flat; one glossy; April 1997, Acrylic paint, 824A,B,C,E,F,H,J,K,L,M,N: Courtesy of the Estate of Sol LeWitt (Designated for Yale University Art Gallery) 824G: Lent by Alan Gibbs.
