From the castle of Kreuzenstein/Waldviertel; Count Hans Wilczek, Burg Kreuzenstein, Austria ; [ Blumka Gallery, New York (sold 1991)]
The Metropolitan Museum of Art. "One Hundred Twenty-First Annual Report of the Trustees for the Fiscal Year July 1, 1990, through June 30, 1991." Annual Report of the Trustees of the Metropolitan Museum of Art 121 (1991). p. 35.
Benton, Janetta Rebold, ed. Medieval Monsters: Dragons and Fantastic Creatures. Katonah: Katonah Museum of Art, 1995. pp. 11–12, 33, fig. 16.
Wixom, William D., ed. Mirror of the Medieval World. New York: The Metropolitan Museum of Art, 1999. no. 149, p. 129.