Mark Rothko, Untitled (Yellow, Blue on Orange), 1955 https://dailyrothko.tumblr.com/post/629746083660201984/mark-rothko-untitled-yellow-blue-on-orange
Mark Rothko, 1947 https://dailyrothko.tumblr.com/post/630108469527298048/mark-rothko-untitled-1947-nga-washington-dc
