Kurt Schwitters

Ernst Schwitters, Lysaker (acquired by descent from the artist in 1948)
Galerie Gmurzynska, Cologne (acquired from the above)
Acquired from the above in 2003 by the present owner 

London, Lord's Gallery, Kurt Schwitters, October - November 1958, no. 59
Cambridge Arts Council Gallery; Swansea, Glynn Vivian Art Gallery; Sheffield, Graves Art Gallery; Leicester Museum and Art Gallery; Coventry, Herbert Temporary Art Gallery and Glasgow University Prints Room, Kurt Schwitters 1887-1948, November 1959 - May 1960, no. 91
Paris, Galerie Gmurzynska, FIAC Grand Palais, Kurt Schwitters, October 1980, no. 49a, p. 114, illustrated
Cologne, Galerie Gmurzynska, Klassische Moderne, May - August 1981, no. 179, p. 228, illustrated
Cologne, Museum Ludwig, Kurt Schwitters. Die späten Werke, April - May 1985, no. 65, p. 91, illustrated and p. 119
Amsterdam, Stedelijk Museum, Couplet 2, April - June 1994
Leipzig, Museum der Bildenden Künste and Amsterdam, Stedelijk Museum, Kurt Schwitters. I is Style, February - July 2000, p. 185, illustrated in color and p. 203

Werner Schmalenbach, Kurt Schwitters, Cologne and New York 1967, no. 156, p. 102, illustrated (titled Ohne Titel (mit hohem Absatz))
Karin Orchard and Isabel Schulz, Kurt Schwitters, Catalogue raisonné, vol. III, Ostfildern-Ruit 2006, no. 2906, p. 373, illustrated 
Douglas Fogle and Hannake Skerath, eds., Making Strange: The Chara Schreyer Collection, New York 2021, pp. 271 and 418, illustrated in color p. 217 (with dimensions of the support and dated 1943)