Maud Glen Coats, Duchess of Wellington (d. 1946).
Ormond, Richard and Elaine Kilmurray, "John Singer Sargent: complete paintings; volume 3, The later portraits," New Haven, CT: Yale University Press, 2003, no. 514.
McKibbin, David, "Sargent's Boston," Boston, Museum of Fine Arts, 1956.
Ormond, Richard and Elaine Kilmurray, "John Singer Sargent: complete paintings; volume 3, The later portraits," New Haven, CT: Yale University Press, 2003, pg. 170.