Giuseppe de Nittis, ‘Portrait of Madame de Nittis ("Attenzione")’, 1874/1875, National Gallery of Art, Washington, D.C.
plate: 9 3/8 x 7 1/16 in. (23.8 x 17.9 cm)  sheet: 28.9 x 20 cm (11 3/8 x 7 7/8 in.)

About Giuseppe de Nittis