This book contains the life stories of 11 American female scientists who had outstanding achievements in their branch of science. The lives of the 11 women included in this book cover a combined time period of more than 120 years. This book argues against the belief that mathematics and science are not for girls and gives examples of very intelligent women doing science. The scientists include: Alice Eastwood; Nettie Maria Stevens; Annie Jump Cannon; Alice Hamilton; Edith Quinby; Gerty Cori; Margaret Mead; Barbara McClintock; Rachel Carson; Rosalyn Yalow; and Mildred Dresselhaus. (ASK)