Michael Goldberg (American, 1924-2007). Conceptual art collage on graph paper with a brown square in the center crossed by gray lines vertically and horizontally. Signed along the upper right. Inscribed “6×6” along the upper center. Dated 7/16/71 along the upper left. Sight; height: 11 in x width: 17 in. Framed; height: 14 1/2 in x width: 20 1/2 in.