on the back edge: HIRAM POWERS. / Sculp.
Possibly a gift September 1842 from the artist to the sitter, William J. Stone [1798-1865], Washington; probably by inheritance to his wife, Elizabeth Jane Lenthall Stone [1804-1892], Washington; gift April 1883 to the Corcoran Gallery of Art, Washington, D.C.; acquired 2015 by the National Gallery of Art.
- Taft, Lorado. The History of American Sculpture. New York, 1930; 68.
- Nicholson, Catherine. "Finding the Stones." Prologue44, no.9 (Summer 2012): 27.