The NYU Grey Gallery had an exhibition of this drawing, among others, August 31 – October 30, 1999 called "John Singer Sargent, Draughtsman: Works from the Corcoran Gallery of Art". The image online at NYU, I believe is inverted.
Special thanks to Andy Holzopfel, of Baltimore, Maryland, a friend of the JSS Gallery, for sending me the NYU Visitor's Guide of the Sargent exhibit from which this image comes.