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Welcome to the National Library of Medicine's Profiles in Science site!
This site celebrates twentieth-century leaders in biomedical research and
public health. It makes the archival collections of prominent scientists, physicians, and
others who have advanced the scientific enterprise available to the public
through modern digital technology.
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Featuring:
The Alan Gregg Papers
![[Alan Gregg]. [1930s].](/FS/B/B/B/P/_/fsbbbp~.jpg)
Alan Gregg, a career Rockefeller Foundation officer,
was a leader in the fields of public health,
medical education and research.
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![[Barbara McClintock in lab]. 26 March 1947.](/LL/B/B/P/P/_/llbbpp~.jpg)
![[C. Everett Koop examining an infant]. [ca. 1974].](/QQ/B/D/P/X/_/qqbdpx~.jpg)
![[Meeting of the National Advisory Council on Regional Medical Programs] photo by Edward A. Hubbard](/RM/B/B/C/M/_/rmbbcm~.jpg)