Kallir 1998: "Signed and dated, lower left (as horizontal). Estate stamp, verso. [...] Private collection. Provenance: Heinrich Rieger; Galerie Würthle, Vienna. Exhibitions: Darmstadt, 1967, no. 101, ill. Literature: Peter Weiermair, ed., Egon Schiele: Schriften und Zeichnungen (Innsbruck, 1968), p. 41"
Quelle: Jane Kallir: Egon Schiele. The complete works. Expanded Edition. New York 1998; www.artloss.com
