Catalogue of the Pictures at Althorp made in November 1802 , manuscript, listed in the Picture Gallery, as 'Sir A Mor' (see K. Garlick, op. cit., p. 122).
T.F. Dibdin, Aedes Althorpianae: Or An Account of the Mansion, Books, and Pictures, at Althorp; The Residence of George John Earl Spencer, London, 1822, p. 246, as ' A Man of Letters , by Sir Anthony Mor', illustrated.
Dr. Waagen, Treasures of Art in Great Britain: Being an account of the Chief Collections of Paintings, Drawings,Sculptures and Illuminated MSS ., London, 1854, III, pp. 456-457, as 'Joos van Cleve, His own Portrait'.
Catalogue of the Pictures at Althorp House, in the county of Northampton , privately printed, 1851, p. 65, no. 268, as ' Himself, Joos van Cleve'.
C. Justi, ‘Der Fall Cleve’, Jahrbuch der Königlich Preussischen Kunstsammlungen , XVI, 1895, pp. 15-16, illustrated.
H. Walpole, 'Journals of Visits to Country Seats, etc.', The Walpole Society , XVI, 1928, p. 14, as 'called Holbein's, and may be so, it is good'.
M.J. Friedländer, Die Altniederländische Malerei , Leiden, 1934, IX, p. 142, no. 105, as 'Joos van Cleve', and dated to circa 1540.
M.J. Friedländer, Early Netherlandish Painting, New York and Washington, 1972, IXa, p. 70, no. 105, pl. 112.
K.J. Garlick, 'Catalogue of the Pictures at Althorp', The Walpole Society, XLV, 1976, pp. 13 and 122, no. 95, as 'Attributed to Joos van Cleve'.
J.O. Hand, Joos van Cleve: The Complete Paintings, New Haven and London, 2004, p. 190, no. 115.