Graham Reynolds with the assistance of Katharine Baetjer. European Miniatures in The Metropolitan Museum of Art. Exh. cat., The Metropolitan Museum of Art. New York, 1996, pp. 11, 13, 120, no. 105, colorpl. 105 (obverse) and ill. p. 121 (obverse and reverse), call it "exceptional in being a version in miniature of a religious theme which [Mengs] later repeated in oil".