Tancred Borenius, Rudolf Wittkower Catalogue of the Collection of Drawings by the Old Masters Formed by Sir Robert Mond.... London, 1937, p. 64, no. 260, pl. 27b (as "Perino del Vaga, attributed to; Designs for Decoration, Lions' Heads, etc...It has been suggested [see note at back] that this is a design for the decoration of armour.").
Bernice F. Davidson Mostra di disegni di Perino del Vaga e la sua cerchia Exh. cat. Florence, Gabinetto Disegni e Stampe degli Uffizi. Florence, 1966, p. 67, under no. 70 (as Perino del Vaga).
Jacob Bean, Lawrence Turčić 15th and 16th Century Italian Drawings in the Metropolitan Museum of Art. The Metropolitan Museum of Art, New York, 1982, pp. 178-79, no. 172 (as Perino del Vaga).
William M. Griswold, Linda Wolk-Simon Sixteenth Century Italian Drawings in New York Collections. Exh. cat., The Metropolitan Museum of Art (January 11 - March 27, 1994). The Metropolitan Museum of Art, New York, 1994, pp. 13-14, 150, no. 12 (as Pellegrino Tibaldi).
Matteo Lanfranconi "Antonio Tronsarelli: A Roman Collector of the Late Sixteenth Century." The Burlington Magazine. Vol. 140, No. 1145 (Aug., 1998), 1998, pp. 543, 549, fig. 40, no. A.104 (listed in Tronsarelli's 1601 inventory as "una carta reportata con teste mostruose, et da reverso alcune figurine di penna Pierino").
Elena Parma Perino del Vaga: tra Raffaello e Michelangelo. Exh. cat., Mantua, Palazzo Te (March 18 - June 10, 2001). Milan, 2001, pp. 73, 207, no. 98 (text by Catherine Goguel and Elena Parma Armani, as Perino del Vaga).