
Edward Penfield (American, 1866 - 1925)

E.J. Kitson (American, 19th/20th Century)

Walter Cyliax (German, 1899–1945)

Emil Rudolf Weiss (German, 1875-1942)

Édouard Bernard (French, 1890-)

Will Bradley (American, 1868 – 1962)

Anonymous

Laboratoires du docteur A. Vermersch (French, 20th Century)

Anonymous

Anonymous

Laboratoires Calmovarine (French, 20th Century)

Alexandre de Riquer (Spanish, 1856 - 1920)

Anonymous

Anonymous

Edmund Edel (German, 1918–1939)

Anonymous

National Institutes of Health (American, 1887-)

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

James Fuller Queen (American, 1820-1886)

Laboratoires Dehaussy (French, 20th Century)

Donaldson Lith. Co (American, 1863-?)

Anonymous

Willem van Leen (Dutch, 1753 – 1825)

Anonymous