Karen Junod, Writing the lives of painters, biography and artistic identity in Britain 1760-1810 , Oxford University Press, Oxford, 2011, pp. 127,131..., fig. 18, CT21 J85 2011 (YCBA)Tessa Violet Murdoch, A glimpse of the apprentice William Hogarth engraving his master's shop-bill : the sign of the angel, Silver Studies, vol. 31, 2015, pp. 63-65, V 2571 (YCBA)