William H. Wilson. Dutch Seventeenth Century Portraiture: The Golden Age. Exh. cat., John and Mable Ringling Museum of Art. Sarasota, 1980, unpaginated, no. 44, ill., as a portrait of Margaretha de Geer in her mid-seventies.
Werner Sumowski. Gemälde der Rembrandt-Schüler. Vol. 3, B. Keil–J. Ovens. Landau/Pfalz, 1983–[94?], pp. 1957–58, 2027, no. 1391, ill., as a portrait of an elderly woman, rejecting Wilson's [see Ref. 1980] identification of the sitter as Margaretha de Geer.
William W. Robinson. "Nicolaes Maes: Some Observations on His Early Portraits." Rembrandt and His Pupils. Ed. Görel Cavalli-Björkman. Stockholm, 1993, pp. 104, 116 n. 21, as one of six portraits by Maes that are dated 1657, and as "Maes's only early portrait on the scale of a miniature".
León Krempel. Studien zu den datierten Gemälden des Nicolaes Maes (1634–1693). Petersberg, Germany, 2000, pp. 287–88, no. A28, fig. 91, as a portrait of an elderly woman, noted as one of the few miniatures by Maes that are known or recorded.
Esmée Quodbach. "The Age of Rembrandt: Dutch Paintings in The Metropolitan Museum of Art." Metropolitan Museum of Art Bulletin 65 (Summer 2007), p. 65.
Walter Liedtke. Dutch Paintings in The Metropolitan Museum of Art. New York, 2007, vol. 1, pp. 442–43, no. 111, colorpl. 111.