Sotheby's, London, 2 May 1997, lot 19
Berliner Illustrirte Zeitung 24, 14 June 1925: 743
Moholy-Nagy, Painting, Photography, Film (Munich, 1925), p. 95
Franz Roh, Nach-expressionismus: magischer Realismus; Probleme der neuesten Europäischen Malerei (Leipzig, 1925), p. 141
Pásmo: revue internationale modern 2, nos. 6-7, 1926, cover
The Museum of Modern Art, Object:Photo. Modern Photographs: The Thomas Walther Collection 1909-1949, pl. 14
Van Rheeden, Paul Citroen: kunstenaar, docent, verzamelaar, p. 110