Winslow Homer watercolours : [exhibition Winslow Homer Watercolors ... celebrating the 150th anniversary of the artist's birth ; exhibition dates: National Gallery of Art, Washington, March 2 - May 11, 1986, Amon Carter Museum, Forth Worth, June 6 - July 27, 1986, Yale University Art Gallery, New Haven, September 11 - November 2, 1986] / Helen A. Cooper. National Gallery of Art, Washington