
Adolph Treidler (American, 1886–1981)

William Nicholson (English, 1872-1949)

Emil Pirchan (Austrian, 1884-1957)

Anonymous

Dmitriĭ Stakhievich Moor (Russian, 1883-1946)

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

Laboratoires Robert & Carrière (French, 20th Century)

Laboratoire du Néobiol (French, 20th Century)

Leslie Ragan (American, 1897-1972)

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

Imp. Rouchon (French, 19th/20th century)

Adrià Gual (Spanish, 1872-1943)

Laboratoire Chantereau (French, 20th Century)

Carlo Cussetti (Italian, 1866–1949)

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

Alexey Brodovitch (American, 1898-1971)

Alfredo Edel Colorno (Italian, 1856–1912)

NASA (American, 1958 -)

Laboratoires Chapotot (French, 20th Century)

Plinio Colombi (Swiss, 1873 - 1951)

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

Imp. A. Broise (French, 19th/20th century)

NASA (American, 1958 -)

Dudley Hardy (English, 1867-1922)