This volume features substantive biographical essays on 59 women from around the world who have made significant contributions to mathematics from antiquity to the present. Designed for secondary school students and the general public, each profile describes major life events, obstacles faced and overcome, educational and career milestones-including a discussion of mathematical research in non-technical terms-and interests outside of 2 promotics. Although the collection includes historical women, the emphasis is on contemporary mathematicians, many of whom have not been profiled in any previous work. The work also celebrates the contributions of minority women, including 10 African-American, Latina, and Asian mathematicians. Written by practicing mathematicians, teachers and researchers, these profiles give voice to the variety of pathways into mathematics that women have followed and the diversity of areas in which mathematics can work. Many profiles draw on interviews with the subject, and each includes a short list of suggested reading by and about the mathematician. Most mathematicians profiled stress the value, importance, and enjoyment of collaborative research, contradicting the prevailing notion that doing good mathematics requires isolation. This collection provides not only a substantial number of role models for girls interested in a career in mathematics, but also a unique depiction of a field that can offer a lifetime of challenge and enjoyment.