Hugh Belsey, Thomas Gainsborough: The portraits, fancy pictures and copies after old masters, Yale University Press, New Haven, CT, fig. 170.1, NJ18.G16 B453 2019 (LC) Oversize (YCBA)James Hamilton, Gainsborough A Portrait, Weidenfeld and Nicolson, London, p. 331, NJ18.G16 H36 2017 (YCBA)Joanna Marschner, Enlightened Princesses : Caroline, Augusta, Charlotte, and the Shaping of the Modern World, Yale University Press, New Haven, Conn, 2017, p. 378, fig. 22.03, NX543 +.E55 2017 Oversize (YCBA)