G. C. Williamson, 'Mr J. Pierpont Morgan's Pictures. The Early Miniatures, II', The Connoisseur, January 1907, vol. XVII, illustrated p. 6, no. XXV (as the Earl of Callendar [sic] by John Hoskins).
G. C. Williamson, Catalogue of the Collection of Miniatures. The Property of J. Pierpont Morgan, London, 1907, I, p. 80, no. 83, illustrated pl. XXXVIII (as the Earl of Callendar [sic] by John Hoskins the elder).
J. J. Foster, Samuel Cooper and the English Miniature Painters of the XVII Century, Supplement, London, 1914-1916, p. 124, no. 24 (as James 1st Earl of Callander by John Hoskins).