Fred Sandback's Title unknownFred Sandback's Untitled (Vertical Construction with Two Parts), 1981Fred Sandback's Title unknownFred Sandback's Untitled (Red Corner Piece), 1967Fred Sandback's Untitled, c. 1978Fred Sandback's Broadway Boogie Woogie (Sculptural Study, Twenty-Eight Part Vertical Construction), 1991/2006Fred Sandback's Untitled (Sculptural Study, Six-Part Construction), c. 1977/2008