Gerhard von Kügelgen ”Christoph Martin Wieland” 1808/09 Oil on canvas (oval mirror) 28 3/8 × 24 in. Small nick H(einrich) H(ubert) Houben (ed.): Damals in Weimar. Erinnerungen und Briefe von und an Johanna Schopenhauer. Berlin, Rembrandt-Verlag, 2nd extended edition. 1929, p. 144-145 / Auction 153. Munich, Neumeister, 8./9.5.1974, cat. no. 1383, ill. 119 Estate Johanna Schopenhauer (died 1838) / Sanitätsrat Heinrich Wolff, Bonn (died 1875) / Mrs. Oberstleutnant Spangenberg, Bonn (1929) / Private Collection, Baden-Wuerttemberg (1974 aquired at Neumeister)