United States. Public Health Service

Emery A. Johnson (1929-2005), American physician, administrator, and health advocate, devoted his career to improving the health needs of the country's Native American and Alaska Native populations. He was the fourth director of the Indian Health Service (I.H.S.), an Assistant Surgeon General of the United States, and a life-long supporter of allowing American Indians to take control of their own health care management.

Mason V. Hargett contributed greatly to the field of tropical medicine with his work on the yellow fever vaccine, first with the Rockefeller Foundation in Brazil and then at the USPHS Rocky Mountain Laboratory in Montana. Hargett's research facilitated the introduction of a yellow fever vaccine produced without human serum.