design Aitken also enjoyed success as a designer of coins and medals. He sculpted the $50 gold commemorative (round and octagonal) for the Panama-Pacific Exposition of 1915, as well as the official medal of the event. He also created the Missouri Centennial half dollar of 1921, following it a decade and a half later with the California Pacific International Exposition half dollar of 1935–1936. In the medallic arena, Aitken sculpted the American Numismatic Society's 1921 medal commemorating Marshal Foch's visit to the United States; the 15th issue of the Society of Medalists Omnia Vincit Amor, 1937; the Medal of the National Academy of Design; and the Medal of the National Sculpture Society. Notes See also George Rogers Clark (sculpture, 1921) Lumbermen Monument William A. Starke Memorial References Goode, James M. The Outdoor Sculpture of Washington, D.C., Smithsonian Institution Press, Washington, D.C., 1974 Gurney, George, Sculpture and the Federal Triangle, Smithsonian Institution Press, Washington D.C., 1985 Hunter, Marie Nau, Missouri and Mississippi: Robert Ingersoll Aitken's Sculpture in Jefferson City, Missouri, Master's Thesis, University of Missouri-Columbia, 1996 Opitz, Glenn B, Editor, Mantle Fielding’s Dictionary of American Painters, Sculptors & Engravers, Apollo Book, Poughkeepsie, NY, 1986 Proske, Beatrice Gilman, Brookgreen Gardens Sculpture, Brookgreen Gardens, South Carolina, 1968 External links Robert Ingersoll Aitken papers, 1902–(ca. 1949) from the Smithsonian's Archives of American Art Smithsonian American Art Museum's list of works 1878 births 1949 deaths American architectural sculptors American male sculptors Artists from San Francisco San Francisco Art Institute alumni San Francisco Art Institute faculty 20th-century American sculptors 20th-century American male artists National Sculpture Society members Sculptors from California American currency designers Coin designers Olympic competitors in art competitions Members of the American Academy of Arts and Letters