Artist: James McNeill Whistler Date: 1878 Collection: Glasgow University Library Accession Number: MS Whistler LB11 p.49 Medium: pen and black ink Support: cream laid paper Size: 4 5/16 x 6 15/16" (110 x 176 mm) Signature: butterfly (on letter) Inscription: '24. May. 1878' by C. A. Howell