(Duveen Brothers, Inc., London and New York); purchased 2 December 1914 by Peter A.B. Widener, Lynnewood Hall, Elkins Park, Pennsylvania; inheritance from Estate of Peter A.B. Widener by gift through power of appointment of Joseph E. Widener, Elkins Park, Pennsylvania; gift 1942 to NGA.
- Works of Art from the Widener Collection. Foreword by David Finley and John Walker. National Gallery of Art, Washington, 1942: 8.
- Swarzenski, Georg. "Some Aspects of Italian Quattrocento Sculpture in the National Gallery." Gazette des Beaux-Arts 6th series, 24 (November 1943): 288 fig. 3, 289-290, as by Desiderio da Settignano.
- Duveen Brothers, Inc. Duveen Sculpture in Public Collections of America: A Catalog Raisonné with illustrations of Italian Renaissance Sculptures by the Great Masters which have passed through the House of Duveen. New York, 1944: figs. 72-74.
- Paintings and Sculpture from the Widener Collection. National Gallery of Art, Washington, 1948 (reprinted 1959): 114, repro.
- Seymour, Charles. Masterpieces of Sculpture from the National Gallery of Art. Washington and New York, 1949: 176, note 22, repro. 82-84.
- Summary Catalogue of European Paintings and Sculpture. National Gallery of Art, Washington, 1965: 152.
- European Paintings and Sculpture, Illustrations. National Gallery of Art, Washington, 1968: 135, repro.
- Brown, David Alan, and Charles Seymour, Jr. "Further Observations on a Project for a Standard by Verrocchio and Leonardo." Master Drawings 12, no. 2 (Summer 1974): 127-133, esp. 130, repro.
- Sculpture: An Illustrated Catalogue. National Gallery of Art, Washington, 1994: 73, repro.
- Desiderio da Settignano: Sculptor of Renaissance Florence. Exh. cat. Musée du Louvre, Paris; Museo Nazionale del Bargello, Florence; National Gallery of Art, Washington. Milan, 2007: 150, 153, fig. 97.
- Gentilini, Giancarlo. "L'amorevolezza del maestro. Compagni e discepoli di Desiderio, 'giovane eccellente nella scultura.'" In Connors, Joseph, Alessandro Nova, Beatrice Paolozzi Strozzi and Gerhard Wolf, eds. Papers from a colloquium held at the Kunsthistorisches Institut in Florence, Max-Planck-Institut, and at Villa I Tatti, The Harvard University Center for Italian Renaissance Studies, Florence, May 9-12, 2007 on occasion of the exhibition in Florence dedicated to Desiderio da Settignano. Venice, 2011: 101-122, esp. 114.