
Richard Nicolaüs Roland Holst (Dutch, 1868 - 1938)

H. B. Matthews (American, 19th/20th Century)

Starmer (American, 19th/20th century)

Anonymous

Anonymous

Anonymous

Edward Penfield (American, 1866 - 1925)

Edward Penfield (American, 1866 - 1925)

Nature & Method Publ. Co. (American, 19th/20th century)

Jonas Lie (American, 1880-1940)

Anonymous

Maurice Prendergast (American, 1858-1924)

Anonymous

Anonymous

Anonymous

John Philip Falter (American, 1910–1982)

Eric Rohman (Swedish, 1891 - 1949)

Daniel Urrabieta Vierge (Spanish, 1851-1904)

Centers for Disease Control and Prevention (American, 1946-)