Signature: Signed: (on setting back of fish head on one hinged unit, on edge near pin on the other) LALIQUE
Mary Kellogg Hopkins, Menlo Park and San Francisco (until d. 1941; her bequest to MMA)
New York. Cooper Union Museum for the Arts of Decoration. "Nineteenth Century Jewelry from the First Empire to the First World War," 1955, no. 311 (as "Double brooch").
New York. The Metropolitan Museum of Art. "A Century of Design, Part I: 1900–1925," December 14, 1999–March 26, 2000.
New York. The Metropolitan Museum of Art. "Modern Design," March 30–December 3, 2006, no catalogue.
Paris. Musée du Luxembourg. "René Lalique: Exceptional Jewellery 1890–1912," March 7–July 29, 2007.
New York. The Metropolitan Museum of Art. "Masterpieces of Modern Design: Selections from the Collection," May 30–October 5, 2008.
State Museums of the Moscow Kremlin. "The Art of René Lalique," September 21, 2010–January 9, 2011, no. 45.
Francis Henry Taylor, Horace H. F. Jayne, and Laurence S. Harrison. "Review of the Year: 1945." Annual Report of the Trustees of The Metropolitan Museum of Art no. 76 (1945), p. 16.
William Osmun. Nineteenth Century Jewelry from the First Empire to the First World War. Exh. cat., Cooper Union Museum for the Arts of Decoration. [New York], 1955, pp. 11, 19, no. 311, fig. 13, dates it 1900–10.
Clare Le Corbeiller inTreasures from The Metropolitan Museum of Art: French Art from the Middle Ages to the Twentieth Century. Exh. cat., Yokohama Museum of Art. Tokyo, 1989, p. 188, no. 150.
Charlotte Gere. "European Decorative Arts at the World's Fairs: 1850–1900." Metropolitan Museum of Art Bulletin 56 (Winter 1998–99), p. 55, ill. (color).