Catalogues Raisonnés

• MacDonald, Margaret F., James McNeill Whistler. Drawings, Pastels and Watercolours. A Catalogue Raisonné, New Haven and London, 1995 (cat. no. 1248) as 'Two butterflies'.

Authored by Whistler

• Whistler, James McNeill, The Gentle Art of Making Enemies, London, 1890, repr. pp. 73, 112.

Catalogues 1906-Present

• Curry, David Park, James McNeill Whistler at the Freer Gallery of Art, New York and London, 1984, p. 284, pl. 292.

Websites

• Freer Gallery of Art website at https://asia.si.edu/object/F1904.451, as 'Two Butterflies'.