
Blanche Letcher (American, 1872-1938)

Francis Prompt (French, 20th Century)

Marcius Willson (American, 19th/20th Century)

Fred Taylor (English, 1875-1963)

Laboratoires G. Beytout (French, 20th Century)

Henri Privat-Livemont (Belgian, 1861–1936)

Anonymous

Moritz Ulffers (German, 1819-1902)

Laboratoires Robert & Carrière (French, 20th Century)

Louis Rhead (American, 1857-1926)

Edward Penfield (American, 1866 - 1925)

Henri Ganier (French, 1845-1936)

Anonymous

Anonymous

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

Cândido de Faria (Brazilian, 1849-1911)

Victor Prouvé (French, 1858-1943)

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

National Institutes of Health (American, 1887-)

Courier Litho. Co. (American, 19th/20th Century)

Edward Penfield (American, 1866 - 1925)

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

Hans Makart (Austrian, 1840 - 1884)

Juan Carlos y Nestor (American, 20th century)