In 1933, Franklin D. Roosevelt became President. He was notable not only as an avid collector in his own right (with a collection estimated at around 1 million stamps), but also for taking an interest in the stamp issues of the Department, working closely with Postmaster James Farley, the former Democratic Party Committee Chairman. Many designs of the 1930s were inspired or altered according to Roosevelt's advice. In 2009–10, the National Postal Museum exhibited six Roosevelt sketches that were developed into stamp issues: -the 6-cent eagle airmail stamp -five miscellaneous commemoratives, which honored the Byrd Antarctic Expedition, -the Mothers of America, Susan B. Anthony, Virginia Dare and the Northwest Territories' rise to statehood. A steady stream of commemoratives appeared during these years, including a striking 1934 issue of ten stamps presenting iconic vistas of ten National Parks—a set that has remained widely beloved. (In a memorable sequence from Philip Roth's novel The Plot Against America, the young protagonist dreams that his National Parks stamps, the pride and joy of his collection, have become disfigured with swastika overprints.) Choosing an orange color for the 2¢ Grand Canyon tableau instead of the standard 2¢ carmine red, the Post Office departed from U. P. U. color-coding for the first time.