Kallir 1998: "Signed and dated, lower right. Present whereabouts unknown. Provenance: Heinrich Rieger"
Quelle: Jane Kallir: Egon Schiele. The complete works. Expanded Edition. New York 1998; Robert Rieger: Egon Schiele. In: Wiener Illustrierte Zeitung, 28(1918)8, S.132-133, hier S.132; www.artloss.com
