Rodolfo Pallucchini. L'arte di Giovanni Battista Piazzetta. Bologna, 1934, pp. 41, 45–46 n. 7, fig. 47, as in the collection of Italico Brass, Venice; dates it about 1739–40; calls it an homage to Titian; mentions a derivation in the Slocovich collection, Trieste, brought to his attention by Giuseppe Fiocco.
Max Goering. "Halbfigurenbilder von G. B. Piazzetta." Kunst-Rundschau 48 (May–June 1940), pp. 55–59, ill., dates it between 1735 and 1740.
Rodolfo Pallucchini. Giovanni Battista Piazzetta. Rome, 1942, p. 13, pl. 21, incorrectly as still in the collection of Italico Brass; dates it shortly after 1727.
Harry B. Wehle. "The de Groot Collection." Metropolitan Museum of Art Bulletin 6 (June 1948), pp. 264, 267, ill.
Rodolfo Pallucchini. Piazzetta. Milan, 1956, p. 28, fig. 54, as in a private collection, USA; dates it to the early 1730s; notes that the head of Saint Christopher derives from that of Saint Francis of Paola (Accademia dei Concordi, Rovigo), which in turn repeats that of Abraham in the Sacrifice of Isaac (National Gallery, London).
Carlo Donzelli. I pittori veneti del Settecento. Florence, 1957, p. 188, erroneously lists it as still in the collection of Italico Brass.
Rodolfo Pallucchini. "Miscellanea Piazzettesca." Arte veneta 22 (1968), pp. 120, 128 n. 48, calls it a variant of an oval painting of Saint Joseph and the Christ Child (Národní Galerie, Prague), and notes Piazzetta's repetition of the figure of Saint Joseph in other works.
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, pp. 48–49, pl. 54, date it about 1730.
Howard Hibbard. The Metropolitan Museum of Art. New York, 1980, p. 352, fig. 632.
Adriano Mariuz in L'opera completa del Piazzetta. Milan, 1982, pp. 88–89, no. 59, ill., dates it to the 1730s; notes that a copy or replica of the head of Saint Christopher sold at auction at the Dorotheum, Vienna (March 15–17, 1956, no. 105).