Ursula Heiderich, August Macke, Aquarelle. Catalogue raisonné, Ostfildern 1997, pp. 30 and 290, cat. no. 336 (illustrated in b/w on p. 291). Gustav Vriesen, August Macke, Bielefeld 1957, cat. rais. no. A 323 (illustrated in b/w on p. 290, illustration erroneously assigned to cat. rais. no. 322). - - August Macke 1887-1914. Aquarell-Ausstellung, exhib. cat. Städtisches Kunsthaus, Bielefeld, June 23 - July 21, 1957, p. 40 (illustrated, not exhibited). Galerie Wolfgang Ketterer, 12th auction, 19th and 20th Century, November 26, 1974, lot 1115 (with full-page color illustration on p. 169). J. M. McCullagh, August Macke and the Vision of Paradise: An Iconographic Analysis, (Diss.) Austin 1980, pp. 95-97 and 220 (illustrated on p. 70). Christie"s, London, 7407th auction, Impressionist and Modern Works on Paper, June 19, 2007, lot 197 (with color ill., with the note “Property from a German Private Collection”). “What occupied August most at the time was the dynamism in a picture, expressed not only by the formal division of the space, but especially through the interplay of the hues against and among one another [..], the color had to operate, vibrate - live.” Elisabeth Erdmann-Macke in retrospect, in: Erinnerungen an August Macke, Stuttgart 1962, pp. 283f. “My views on art differ from those of Kandinsky and Marc. I feel solely responsible for myself now.” August Macke in a letter to Bernhard Koehler, October 16, 1913, quoted in Gustav Vriesen, August Macke, Stuttgart 1953, p. 120. “A couple of times a week, August and my brother would go on a morning ride to the nearby Tannenbusch, which at the time was the hussars" drill ground.” Elisabeth Erdmann-Macke in retrospect, in: Erinnerungen an August Macke, Stuttgart 1962, p. 270. Called up: December 6, 2024 - ca. 18.30 h +/- 20 min.