
National Institutes of Health (American, 1887-)

Charles Tichon (French, active 1882-)

Anonymous

Theo van Rysselberghe (Belgian, 1862-1926)

Anonymous

Gustave Fraipont (French, 1849 - 1923)

Anonymous

Hugo Höppener (Fidus) (German, 1868 – 1948)

Imp. Chaix (French, 1845 - 1965)

Laboratoires Caillaud (French, 20th Century)

Howard Zieff (American, 20th Century)

Eric Rohman (Swedish, 1891 - 1949)

Philippe Chapellier (French, 19th/20th Century)

Ferdinand Andri (Austrian, 1871-1956)

Antoine Barbizet (French, 19th Century)

Laboratoire du Neurotensyl (French, 20th Century)

Frank Hazenplug (American, 1873-1931)

Rode & Brand (American, 19th/20th Century)

Pal (Jean de Paleologue) (Romanian, 1855 - 1942)

Anonymous

Anonymous

Ottavio Rodella Tavio (Italian, 1864-1910)

Anonymous