Barbara McClintock was a pioneering American scientist and one of the world's most distinguished cytogeneticists. McClintock received her PhD in botany from Cornell University in 1927, where she was a leader in the development of maize cytogenetics. The field remained the focus of her research for the rest of her career. From the late 1920s, McClintock studied chromosomes and how they change during reproduction in maize. Wikipedia
The definitive Wikipedia entry for Barbara McClintock. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Barbara_McClintock
...Harbor Laboratory Archives Barbara McClintock:A Brief Biographical Sketch America's most distinguished cytogeneticist, Barbara McClintock, was born in Hartford, Connecticut on June 16, 1902... . library.cshl.edu/archives/archives/bmcbio.htm