The Metropolitan Museum of Art, Gifford Memorial Catalogue, New York, 1880, n.p., no. 518 (as A Sketch in St. Peter's Rome).
Richard York Gallery, The Italian Presence in American Art: 1860-1920, exhibition catalogue, New York, 1989, p. 6, no. 19, illustrated.
T.E. Stebbins, Jr., ed., The Lure of Italy: American Artists and The Italian Experience, exhibition catalogue, Boston, Massachusetts, 1992, p. 437, fig. 133, illustrated.
New York, The Metropolitan Museum of Art, Loan Collection of Paintings in the West and East Galleries, 1880-81, no. 123 (as In the Vatican, a Study).
New York, Richard York Gallery, The Italian Presence in American Art: 1860-1920, November 17-December 29, 1989, no. 19.
Boston, Massachusetts, Museum of Fine Arts, and elsewhere, The Lure of Italy: American Artist and the Italian Experience, 1760-1914, September 16-December 14, 1992, no. 133.