Franz Wild. The Nekrologe und Verzeichnisse der Gemälde von Franz & Hermann Winterhalter. Zürich, 1894 [reprinted in Richard Ormond and Carol Blackett-Ord, "Franz Xaver Winterhalter and the Courts of Europe," Washington, 1987, p. 236, no. 407], calls it a three-quarter length portrait.
A. P. Muller. Painters and Sculptors in Russia. Moscow, 1925 [see Ref. Barilo von Reisberg 2003], as in the collection of the State Trtyakov Gallery, Moscow.
Harry B. Wehle. "A Loan of Paintings." Metropolitan Museum of Art Bulletin 31 (October 1936), p. 210.
Harry B. Wehle. "The de Groot Collection." Metropolitan Museum of Art Bulletin 6 (June 1948), pp. 264, 268, ill., erroneously states that the countess was the wife of the Russian ambassador to Rome.
Richard Ormond et al. Franz Xaver Winterhalter and the Courts of Europe, 1830–70. Exh. cat., National Portrait Gallery. London, 1987, pp. 54, 236, no. 407, includes iy as no. 407 in an annotated list of Winterhalter's works originally drawn up by his nephew Franz Wild in 1894; comments that it represents a full-face pose with bust and head rising vertically from the semicircle of the dress.
Eugene Barilo von Reisberg. Letter to Gary Tinterow. March 12, 2003, gives extensive information regarding the sitter and her family and suggests that the book of poetry that she holds is a reference to her father.
Rebecca A. Rabinow in Masterpieces of European Painting, 1800–1920, in The Metropolitan Museum of Art. New York, 2007, pp. 44, 312, no. 41, ill. (color and black and white).