We would like to thank Dr. Marie Kakinuma, Zentrum Paul Klee, Bern, for kindly providing additional information.

Lily Klee, Bern (1940–1946) / Klee-Society, Bern (1946–1949) / Galerie Siegfried Rosengart, Lucerne (1949) / Israel Ber Neumann (Graphisches Kabinett, New Art Circle, Neumann Gallery), Berlin/New York (1949 to at the latest 1951) / Frederik C. Schang, South Norwalk/New York (earliest 1951 to at the latest 1959) / Eugene Victor Thaw & Co., New York / The New Gallery, New York / Paul Kantor Gallery, Beverly Hills / Norman Granz, London/Breganzona/Beverly Hills/Geneva (to 1966) / Private Collection, Switzerland (acquired 1966 at Klipstein & Kornfeld, Bern) / Private Collection, Berlin (acquired 1997 at Grisebach, Berlin)

Paul Klee. Dresden, Galerie Neue Kunst Fides, 1924 / Paul Klee. Zweite Gesamtausstellung 1920–1925. 100. Ausst. München, Galerie Neue Kunst Hans Goltz, 1925, Nr. 92 / Paintings by Paul Klee 1879–1940. Palm Beach, Society of the 4 Arts, 1951, Nr. 23 / Paul Klee. Collection of F. C. Schang. South Norwalk, 1952, Nr. 11 / Paul Klee. Collection of F. C. Schang. South Norwalk, 1953, Nr. 19 / 40 Works by Paul Klee from the Collection of F. C. Schang. Minneapolis, Minneapolis Institute of Art, 1955, no. 11 / Paul Klee, Ausstellung in Verbindung mit der Paul-Klee-Stiftung. Bern, Kunstmuseum, 1956, cat. no. 498 / Third Bi-Annual Exhibition of Paintings and Drawings by Paul Klee. New York, Saidenberg Gallery, 1957, cat. no. 16 / Paul Klee (1879–1940). Collection of F. C. Schang. New York, 111 West 57th Street, 1959, Nr. 15 / Monet to Matisse, Modern Masters from Swiss Private Collections. Jerusalem, The Israel Museum, 1988, p. 74, ill. p. 75 / Malerei im Prisma. Freundeskreis Sonia und Robert Delaunay. Cologne, Galerie Gmurzynska, 1991, p. 188, ill. p. 189

F. C. Schang: Paul Klee (1879–1940), Collection of F. C. Schang. New York, 1955, no. 15 / F. C. Schang: Paul Klee (1879–1940), Collection of F. C. Schang. New York, 1957, no. 17 / Auktion 121: Moderne Kunst des 19. und 20. Jahrhunderts. Bern, Kornfeld & Klipstein, 1966, cat. no. 481, w. ill. / Mark Rosenthal: Paul Klee’s „Tightrope-Walker“. An Exercise in Balance. In: Arts Magazine. vol. 53, no. 1, September 1978, p. 106–111, here p. 111 / Mark Rosenthal: Paul Klee and the Arrow. Dissertation, The University of Iowa, 1979, p. 155, w. ill. / Auktion 56: Ausgewählte Werke. Berlin, Villa Grisebach Auktionen, 30.5.1997, cat. no. 44, w. ill. / Shelly Cordulac: Navigating Klee. In: Pantheon, 56. Jg., 1998, p. 141–153, here p. 144 / Katja Schenker: Titel-Bild-Gedicht. Paul Klee, „Einst dem Grau der Nacht enttaucht …“ 1918.17. In: Georges-Bloch-Jahrbuch des Kunsthistorischen Instituts der Universität Zürich, vol. 5, 1998, p. 137–155, here p. 141 / Brigitte Uhde-Stahl: Paul Klees geheime Symbolik. Berlin, Gebr. Mann, 2018, p. 151