John Sheridan (American, 1877 - 1948)
Laboratoires Ciba (French, 20th Century)
National Institutes of Health (American, 1887-)
Laboratoires du Bufox (French, 20th Century)
Beverly Moore (American, 20th Century)
Ludwig Hohlwein (German, 1874 – 1949)
Karl Schnebel (German, 1874 – 1939)
National Institutes of Health (American, 1887-)
Anonymous
Gudmund Stenersen (Norwegian, 1863 – 1934)
Edward Penfield (American, 1866 - 1925)
National Institutes of Health (American, 1887-)
Emil Cardinaux (Swiss, 1877–1936)
U.S. Information Agency (American, 1953-1999)
Bureau of the Census (American, 1902 - )
Fratelli Treves (Italian, 1861 - 1939)
Anonymous
Laboratoires Crinex-Uvé (French, 20th Century)
