Ian Tyers, The tree-ring analysis of 23 panel paintings from the Yale Center for British Art , New Haven, dendrochronological consultancy report 470 , Yale Center for British Art, New Haven, 2011, p., CC78.3 .T94 2011
Ellis Waterhouse, An Impressive Panorama of British Portraiture, Apollo, v. 105, no. 182, April 1977, pp. 239-40, fig. 5, N1 A54 + (YCBA) Another copy of this article may be found in a separately bound and catalogued copy of this issue located on the Mellon Shelf [call number : N5220 M552 A7 1977 + (YCBA)]
Yale Center for British Art, Selected paintings, drawings & books, Yale University Press, New Haven, CT, 1977, p. 1, N590.2 A82 (YCBA)