Catalogues Raisonnés
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MacDonald, Margaret F., James McNeill Whistler. Drawings, Pastels and Watercolours. A Catalogue Raisonné, New Haven and London, 1995 (cat. no. 879) as 'Butterfly for the private view of Venice Etchings'.
Websites
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The Correspondence of James McNeill Whistler, 1855-1903, edited by Margaret F. MacDonald, Patricia de Montfort and Nigel Thorp, 2003-2004, University of Glasgow, website, GUW #11026.
Last updated: 20th February 2021 by Margaret