Catalogues Raisonnés

• MacDonald, Margaret F., James McNeill Whistler. Drawings, Pastels and Watercolours. A Catalogue Raisonné, New Haven and London, 1995 (cat. no. 1249) as 'Butterfly'.

Authored by Whistler

• Whistler, James McNeill, The Gentle Art of Making Enemies, London, 1890, p. 105.

Websites

• Metropolitan Museum of Art website at https://www.metmuseum.org, as 'The artist's butterfly in an enlarged version with a forked tail'.