Artist: James McNeill Whistler Date: 1890 Collection: Library of Congress, Washington, DC Accession Number: Pennell Collection Medium: black crayon and white paint Support: off-white wove paper laid down on cream wove paper, stuck in a copy of 'The Gentle Art of Making Enemies' (Whistler 1890) on p. 1, opposite Whistler's butterfly and numbering ('No. 37') of the edition Size: 8 1/4 x 6 7/16" (209 x 163 mm) Signature: butterflies Inscription: '164' in unknown hand