L. Dubois de Saint-Gelais, Description des Tableaux du Palais-Royale, Paris 1727, p. 408, no. II; R. Hecquet, Catalogue des estampes gravées d'aprés Rubens. Auquel on a joint l'oeuvre de Jordaens, & celle de Visscher. Avec un secret pour blanchir des estampes & en ôter les taches d'huile, Paris 1751, p. 111, no. 10, 3;; J. Couché, La Galerie du Palais-Royale, gravée d'après les tableaux des différentes écoles qui la composent, 1786, II, p. 109; W. Buchanan, Memories of Painting, with a Chronological History of the Importation of Pictures by the Great Masters into England since the French Revolution, 1824, vol. I, p. 169, no. 3; J. Smith, A Catalogue Raisonné..., 1830, vol. II, pp. 202-3, no. 735; G.F. Waagen, Treasures of Art in Great Britain, 1854, vol. II, p. 502, no. 10; M. Rooses, L'Oeuvre de P.P. Rubens, 1890, vol. III, p. 211, no. 720; C. Stryienski, La Galerie de Régent Philippe, Duc d'Orléans, Paris 1913, p. 188, cat. no. 474; L. van Puyvelde, "On Rubens' Drawings", in The Burlington Magazine, LXXVII, no. 45, October 1940, p. 124, reproduced, plate II; L. van Puyvelde, The Sketches of Rubens, 1954 (2nd revised ed.), p. 29, no. 3; J.S. Held, Rubens: Selected Drawings, 1959, vol. I, p. 115, under cat. no. 50; D. DuBon, Constantine the Great, exhibition catalogue, Philadelphia 1964, p. 85, no. 20a; D. DuBon, Tapestries from the Samuel H. Kress Collection at the Philadelphia Museum of Art, The History of Constantine the Great designed by Peter Paul Rubens and Pietro da Cartona, London 1964, p. 10, reproduced, plate 65; J. Coolidge, "Louis XIII and Rubens, The Story of Constantine Tapestries", in Gazette des Beaux-Arts, LXV, 1966, pp. 277-8; J.S. Held, The Oil Sketches of Peter Paul Rubens: A Critical Catalogue, Princeton 1980, vol. I, p. 73, cat. no. 41, vol. II, reproduced, plate 42;; J.S. Held, Rubens: Selected Drawings, Mount Kisco, New York 1986, p. 130, under cat. no. 156;; M. Jaffè, Rubens: catalogo completo, Milan 1989, p. 267, cat. no. 681, reproduced;; P. Krüger, Studien zu Rubens' Konstantinszyklus, series 28, vol. 92, Frankfurt 1989, pp. 10, 166-68;; I. Van Tichelen, "Des Geschiedenis van Constantijn / The History of Constantine", in Delmarcel, Rubens's Textiles, p. 59;; A. Merle du Bourg, Peter Paul Rubens et la France, 1600-1640, Villeneuve d'Ascq 2004, pp. 31, 199;; P. Sutton and M. Wieseman, Drawn by the Brush: Oil Sketches by Peter Paul Rubens, exhibition catalogue, Greenwich, Cincinnati, and Berkeley 2004-5, pp. 79, 130-3, cat. no. 12, reproduced in color;; P.-F. Bertrand, Les tapisseries des Barberini et la décoration d'intérieur dans la Rome baroque (Studies in Wstern Tapestry, II), Turnhout 2005, p. 179, note 155);; R. Quednau, 'Zum Wandel des Konstantin-Bildes in der Kunst: Raphael und Rubens / Pietro da Cortona', in Demandt - Engemann, Konstantin, 2006, p. 278, note 42;; K. Broses, 'Who commissioned Rubens's Constantine series? A new perspective: the entrepreneurial strategy of Marc Comans and Francois de la Plance", in Simiolus. Netherlands quarterly for the history of art, vol. XXXIII, 2008, pp. 166 and 169, fig. 3;; K. Brosens, "Subjects from History: The Constantine Series", in Corpus Rubenianum, part XIII, 2011, pp. 198, cat. no. 3a, reproduced in color. ; Engraved:; Nicolas-Henri Tardieu, between 1742-1746; Jean Baptiste Liénard, published by Jacques Couché, between 1786 and 1808