Charles H. Caffin. "Pictures at the Metropolitan Museum." Harper's Monthly Magazine 104 (January 1902), p. 274.
C[ornelis]. Hofstede de Groot. A Catalogue Raisonné of the Works of the Most Eminent Dutch Painters of the Seventeenth Century. 5, London, 1913, p. 100, no. 317, as "Portrait of a Gentleman," acquired by Marquand in 1888 in London; mistakenly describes the figure as standing.
S[turla]. J. Gudlaugsson. Gerard ter Borch. The Hague, 1959–60, vol. 1, p. 307, pl. 152; vol. 2, p. 164, no. 152, notes Hofstede de Groot's erroneous description of the figure as a standing man; dates it to the end of the 1650s.
Walter Liedtke. "Dutch Paintings in America: The Collectors and Their Ideals." Great Dutch Paintings from America. Exh. cat., Mauritshuis, The Hague. Zwolle, The Netherlands, 1990, p. 36.
Walter Liedtke. Dutch Paintings in The Metropolitan Museum of Art. New York, 2007, vol. 1, pp. ix, 74–75, no. 16, colorpl. 16, dates it to the late 1650s or early 1660s.