Karin Orchard / Isabel Schulz, Kurt Schwitters. Catalogue raisonné, vol. 2, Hanover 2003, p. 462, no. 1974 (illu. in black-and-white) Kurt Schwitters, Sprengel Museum, Hanover, February 4 - April 20, 1986, cat. no. 23 (only in first edition). Galerie Wolfgang Ketterer, Munich, auction in June 1987, lot no. 982 (illu. 989). Schwitters in Norwegen. Arbeiten, Dokumente, Ansichten, ed. by Klaus Stadtmüller, Hanover 1997, p. 31 (illu.). Villa Grisebach Auktionen, Berlin, November 2002, lot no. 301 (illu.). Ulrich Krempel/Karin Orchard/Isabel Schulz, introduction, in: Kurt Schwitters. Catalogue raisonné, vol. 2 1923-1936, Hanover 2003, p. 12. In good condition. Edges faintly bumped in places. With a few small, expertly retouched spots in the margins. Surface minimally rubbed in places and slightly soiled in places. The condition report was compiled in daylight with the help of an ultraviolet light and to the best of knowledge.