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1. Kennedy School dean David Ellwood introduces President Sirleaf.
2. Graduation Address
President Ellen Johnson Sirleaf, M.P.A. '71, of Liberia, Africa's first elected female president, delivers the 2008 graduation address at the Harvard Kennedy School.
The retired government professor has been a rare conservative voice on campus for decades.
In her memoir All That's Unseen, Emilee Hackney explores religion, friendship, and home.
Nobel Prize recipient Joseph E. Murray dedicated much of his career to organ transplant surgery.
