E. Lodge, An Historical Catalogue of an Exhibition of Portraits, 1829, p. 37.
A Descriptive Catalogue of the Paintings in the Collection of John, Duke of Bedford, K.G., at Woburn Abbey, 1834, no. 260, as 'Cornelis Ketel'.
Catalogue of Pictures, Miniatures, Drawings and Busts at Woburn Abbey, 1868, p. 10, as 'Cornelis Ketel'.
G. Scharf, A Descriptive and Historical Catalogue of the Collection of Pictures at Woburn Abbey, 1890, p. 18, no. 24.
A.M. Bedford and E.M. Russell, Catalogue of the Pictures at Woburn Abbey, I, 1892, p. 323.
R. Strong, Tudor and Jacobean Portraits, London, 1969, I, p. 202.