National Institutes of Health (American, 1887-)
B. Lassen (American, 1904-1968)
National Institutes of Health (American, 1887-)
Leopoldo Metlicovitz (Italian, 1868–1944)
Anonymous
U.S. Information Agency (American, 1953-1999)
Anonymous
W.A. Dunn (American, 19th/20th century)
Mills Thompson (American, 19th/20th Century)
Bronisław Wiśniewski (Polish, 1866-1938)
Liebler and Maass Lith. (American, 19th/20th Century)
Max Pirner (Czech, 1854-1924)
Jean d'Ylen (French, 1886-1938)
Anonymous
Anonymous
Louis Rhead (American, 1857-1926)
Arthur Garfield Learned (American, 1872-1959)
Zoro (American, 20th century)
Georges de Feure (French, 1868-1943)
Eric Rohman (Swedish, 1891 - 1949)
Richard Halls (American, 1906 - )
Leonetto Cappiello (Italian, 1875-1942)
Theo van Hoytema (Dutch, 1863-1917)