Gerda Lerner, considered one of the pioneers of women's history, died Wednesday at the age of 92. An obituary in The New York Times detailed her career, much of which was spent at the University of Wisconsin at Madison. She focused on the history of women in the United States when such a focus was highly unusual among historians. In 1972, when Lerner was teaching at Sarah Lawrence College, she created a master's degree in women's history -- the first graduate degree in the field.