Catalogues Raisonnés

• MacDonald, Margaret F., James McNeill Whistler. Drawings, Pastels and Watercolours. A Catalogue Raisonné, New Haven and London, 1995 (cat. no. 202) as 'Policeman and citizen'.

Catalogues 1855-1905

• Frederick Keppel, Chicago, 1896 (no cat. no.).

Newspapers 1855-1905

• Chicago Times Herald, 8 March 1896, repr. p. 30.

Books on Whistler

• Pennell, Elizabeth Robins, and Joseph Pennell, The Life of James McNeill Whistler, 2 vols, London and Philadelphia, 1908, vol. 1, p. 46.

Journals 1906-Present

• Pressly, Nancy D., 'Whistler in America: An Album of Early Drawings', Metropolitan Museum Journal, New York, vol. 5, 1972, pp. 125-54, at p. 153.

Websites

• Clarke, Jay A., and Sarah Kelly Oehler, eds., Whistler Paintings and Drawings at the Art Institute of Chicago, The Art Institute of Chicago, 2020, website.
• Strother, Stephanie L., 'Early Drawings (Cats. 1–5)' in Whistler Paintings and Drawings at the Art Institute of Chicago, The Art Institute of Chicago, 2020, URL (cat. no. 5).