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	Biographical Information Education and Research at Cornell, 1925-1931 From Ithaca to Berlin and Back Again, 1931-1935 Breakage-Fusion-Bridge: The University of Missouri, 1936-1941 Controlling Elements: Cold Spring Harbor, 1942-1967 On the Road: Lectures, 1954-1965 Searching for the Origins of Maize in South America, 1957-1981 The McClintock Renaissance and the Nobel Prize, 1978-1992 Further Readings
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Barbara McClintock (1902-1992) was an American geneticist who won the 1983 Nobel Prize in Physiology or Medicine for her discovery of genetic transposition, or the ability of genes to change position on the chromosome. The American Philosophical Society in Philadelphia is the repository for the Barbara McClintock Papers, which range from 1927 to 1991. The collection contains laboratory notes, correspondence, unpublished manuscripts, lecture notes, photographs, charts, illustrations, and audiovisual materials.

As part of its Profiles in Science project, the National Library of Medicine has collaborated with the American Philosophical Society to digitize and make available over the World Wide Web a selection of the Barbara McClintock Papers for use by educators and researchers. This site provides access to the portions of the Barbara McClintock Papers of the American Philosophical Society that have been selected for digitization. This site also features correspondence from the Curt Stern Papers at the American Philosophical Society and the Charles Burnham Papers at the University of Minnesota Archives. Individuals interested in conducting research in the Barbara McClintock Papers are invited to contact the American Philosophical Society.

This online Exhibit is designed to introduce you to the various phases of McClintock's scientific career and professional life. It is divided into sections that focus on McClintock's life and major scientific contributions. We suggest that new visitors begin with this exhibit, which includes a small selection of documents and visuals, organized within these sections. Each section begins with a "Background Narrative," which leads to "Documents" and "Visuals."

Visitors may access additional materials through Search on the navigation bar. They may also view the materials alphabetically or chronologically by choosing Browse on the navigation bar. Documents and visuals in these lists are arranged by format and then either alphabetically by title or chronologically.