This undated handout image provided by the National Gallery of Art shows Thomas Moran oil on canvas painting: Green River Cliffs, Wyoming, 1881. The National Gallery of Art in Washington has acquired ... more 
This undated handout image provided by the National Gallery of Art shows Thomas Moran oil on canvas painting: Green River Cliffs, Wyoming, 1881. The National Gallery of Art in Washington has acquired the celebrated landscape. less 
1 / 1
Associated Press | Photo By National Gallery of Art
Sat, Mar 5, 2011 5:24 PM EST