Wilhelm von Bode. Letter. June 2, 1912 [see Gary sale catalogue 1928], attributes it to Tintoretto, calls it an early work, and notes the influence of Titian.
Bernhard Berenson. Italian Pictures of the Renaissance. Oxford, 1932, p. 562, as "Young Man aged twenty" in the collection of Mrs. E. H. Gary, New York.
Rodolfo Pallucchini. La giovinezza del Tintoretto. Milan, 1950, pp. 141, 164 n. 152, fig. 233, as current whereabouts unknown; reads the inscription as giving the sitter's age as 30, but calls the picture a portrait of a young man of 20; notes the connection with Titian's portraits, especially the portrait of a man in the Bache collection (now MMA 49.7.14 and attributed to Lambert Sustris).
Bernard Berenson. Italian Pictures of the Renaissance: Venetian School. London, 1957, vol. 1, p. 176; vol. 2, pl. 1277, as ex Judge Gary collection.
Edoardo Arslan. Le pitture del duomo di Milano. Milan, , p. 33 n. 44, incorrectly as in the Seaman collection, New York.
Pierluigi De Vecchi in L'opera completa del Tintoretto. Milan, 1970, pp. 94–95, no. 85, ill., erroneously as still in the Gary collection.
Burton B. Fredericksen and Federico Zeri. Census of Pre-Nineteenth-Century Italian Paintings in North American Public Collections. Cambridge, Mass., 1972, pp. 200, 517, 521, 609, as possibly a portrait of Spinola.
Federico Zeri with the assistance of Elizabeth E. Gardner. Italian Paintings: A Catalogue of the Collection of The Metropolitan Museum of Art, Venetian School. New York, 1973, p. 73, pl. 89, date it to the end of Tintoretto's early period; state that the composition is based on a Titianesque prototype, "transformed through the influence of central Italian mannerism and realized with a very personal economy of colors"; add that the sitter's identity is unknown but he is traditionally called a member of the Spinola family of Genoa.
Paola Rossi. "I ritratti." Jacopo Tintoretto. 1, Venice, [1974?], pp. 35, 37, 39, 96, 102, 108, 117–18, 132, figs. 61–62 (overall and detail), compares it with similar portraits, including a portrait of a knight of Malta (Hampton Court) and a portrait of a young man (Cincinnati Art Museum).
Paola Rossi in Jacopo Tintoretto: ritratti. Exh. cat., Gallerie dell' Accademia, Venice. Milan, 1994, pp. 18–19, 36 nn. 29–30, p. 167, ill. [German ed., "Jacopo Tintoretto: Portraits"].