
Sydney Mortimer Laurence (American, 1865-1940)

Vivian Milner Akers (American, 1886-1966)

Robert Stöcklin (Swiss, 1889–1931)

Pat Keely (English, 1901-1970)

Anonymous

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

Laboratoire Chantereau (French, 20th Century)

Bootes & Gray (American, 19th/20th century)

Anonymous

Charles Bosseron Chambers (American, 1880 - 1964)

Emil Könlein (Swiss, 1901-1965)

Laboratoires du docteur Roussel (French, 20th Century)

Louis Abel-Truchet (French, 1857-1918)

E. Gros (French, 19th century)

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

Etablissements Minot (French, 19th/20th century)

Laboratoire R. Gallier (French, 20th Century)

Richard Bergh (Swedish, 1858–1919)

Eric Rohman (Swedish, 1891 - 1949)

Laboratoires Pointet & Girard (French, 20th Century)

Anonymous

Fritz Rumpf (German, 1856-1927)

Anonymous