Margaret W. Rossiter is the Marie Underhill Noll Professor of the History of Science at Cornell University and former editor of Isis and Osiris. Her prize-winning books Women Scientists in America: Struggles and Strategies to 1940 and Women Scientists in America: Before Affirmative Action, 1940–1972 are also published by Johns Hopkins. Professor Rossiter was a MacArthur Fellow from 1989 until 1994.