
Julius Klinger (Austrian, 1876 – 1942)

Walter Tittle (American, 1883-1966)

Manuel Orazi (Italian, 1860-1934)

E Clouet (French, 19th Century)

Émile Berchmans (Belgian, 1867 - 1947)

Edward Penfield (American, 1866 - 1925)

Anonymous

Anonymous

Anonymous

Russell, Morgan & Co. (American, 19th/20th century)

Nicolas Tamagno (Italian, 1851 - 1933)

Anonymous

National Institutes of Health (American, 1887-)

Emil Causé (French, 1867-1937)

Laboratoires Fournier frères (French, 20th Century)

Theo van Hoytema (Dutch, 1863-1917)

Imp. Emile Lévy (French, 19th/20th century)

Laboratoire d'actino-biologie (French, 20th Century)