L. Goodrich, Thomas Eakins, New York, 1933, p. 161, no. 18 (as Nude Man Seated and A Warrior's Head from the Antique).
M. Chamberlin-Hellman, Thomas Eakins as a Teacher, Ph.D. dissertation, Columbia University, 1981, pp. 54-55.
R. McKinney, Thomas Eakins, New York, 1942, p. 87, illustrated.
W.I. Homer, Thomas Eakins: His Life and Art, New York, 1992, p. 31, nos. 26, 27, each side illustrated.
Babcock Galleries, Thomas Eakins: Art and Archive, exhibition checklist, New York, 1992 (as Seated Nude and Head of a Warrior).
E. Braun, Manet to Matisse: The Hillman Family Collection, New York, 1994, pp. 72-75, no. 17, illustrated.
T. Eakins and W.I. Homer, ed., The Paris Letters, Princeton, New Jersey, 2009, illustrated.
Bronx, New York, Bronx Museum of the Arts, Paintings Drawings and Sculpture from the Alex Hillman Family Foundation, April 10-May 2, 1972.
Jamaica, New York, Jamaica Arts Center, Master Drawings from New York Private Collections, October 26-December 1, 1982 (as Head of Pericles and Male Nude).
New York, New York University, Grey Art Gallery and Study Center, American Drawings and Watercolors: 1870-1920, January 12-February 13, 1982 (as Head of Pericles and Male Nude).
New York, Babcock Galleries, Thomas Eakins: Art and Archives, October 29-December 5, 1992.