Keywords: Thomas Moran, Green River Cliffs, Wyoming, 1881, oil on canvas.jpg Artwork Creator Thomas Moran 1881 oil canvas cm 63 5 157 5 National Gallery of Art West Main Floor Gallery 67 http //www nga gov/press/2011/moran shtm National Gallery of Art Press Office object history credit line Gift of the Milligan and Thomson Families lower right the letters T Y for Yellowstone and M in monogram TYMORAN / 1881 accession number 2011 2 1 1 http //www artdaily org/index asp int_sec 11 int_new 45466 UHd-MaA0VR0 ArtDaily org<br/>2 http //www nga gov/fcgi-bin/tinfo_f acc 2011 2 1 National Gallery of Art Washington DC http //www the-athenaeum org/art/display_image php id 31904 PD-old-auto-1923 1926 Thomas Moran American paintings in the National Gallery of Art Landscape paintings with native Americans Green River Utah Cliffs in art 1881 paintings Images from the-athenaeum org Images from artdaily org 1880s landscape paintings |