Anonymous
National Caries Program (American, 20th Century)
Arthur Wesley Dow (American, 1857-1922)
Anonymous
Wasyl Masjutyn (German, 1884-1955)
National Institutes of Health (American, 1887-)
Edward Penfield (American, 1866 - 1925)
Anonymous
Henry Koerner (American, 1915-1991)
Theo van Hoytema (Dutch, 1863-1917)
Forbes Co. (American, 19th/20th Century)
Anonymous
Edward Penfield (American, 1866 - 1925)
U.S. Information Agency (American, 1953-1999)
Willem Pothast (Dutch, 1877-1916)
Anonymous