
U.S. Information Agency (American, 1953-1999)

Anonymous

Anonymous

Henry de Groux (Belgian, 1867-1930)

Anonymous

Henri-Gabriel Ibels (French, 1867 - 1936)

Chris Lebeau (Dutch, 1878 – 1945)

National Institutes of Health (American, 1887-)

Theo van Hoytema (Dutch, 1863-1917)

Anonymous

André Pécoud (French, 1880-1951)

Laboratoires G. Beytout (French, 20th Century)

Alexandre Désiré Collette (French, 1814-1876)

Henri de Toulouse-Lautrec (French, 1864-1901)

Walter Russell (American, 1871-1963)

National Institutes of Health (American, 1887-)

Strobridge & Co. Lith. (American, 1847 -)

Louis Tauzin (French, 1845–1914)

Dietmar Winkler (German, 1938 -)

Cândido de Faria (Brazilian, 1849-1911)

Laboratoire de l'Iodarsenic Guiraud (French, 20th Century)

Anonymous

Laboratoires G. Beytout (French, 20th Century)