Meet Katherine Johnson, a brilliant mathematician who worked at NASA in the early 1950s until retiring in 1986. Katherine's unparalleled calculations (done by hand) helped plan the trajectories for NASA's Mercury and Apollo missions (including the Apollo 11 moon landing). She is said to be one of the greatest American minds of all time.

"A ready-to-read level 3 biography of Shirley Chisholm, who, in 1972 became the first African-American woman to enter the Democratic presidential race in the United States"--