Dozens of black women worked for NASA as expert mathematicians from the 1940s to the 1960s, and almost no one knows about it. Segregated within NASA facilities in Hampton, Virginia, well-educated Black women used slide rules and pencils to do the calculations for flights by astronauts John Glenn and Alan Shepherd. American Studies Professor Duchess Harris, whose grandmother Miriam Daniel Mann, was one of these extraordinary women, researched the history and co-authored Hidden Human Computers: The Black Women of NASA. Harris, chair of the American Studies department at Macalester, will speak about this remarkable history.