Charles Sprague Pearce, ‘Study for a Lunette’, 1890/1897, National Gallery of Art, Washington, D.C.
image (lunette): 23.2 x 45.7 cm (9 1/8 x 18 in.)  mount: 30.2 x 45.7 cm (11 7/8 x 18 in.)

About Charles Sprague Pearce

American, 1851-1914, Boston, Massachusetts, based in Paris, France