A comprehensive biographical guide to the scientific achievements, personal lives, and struggles of women scientists from around the globe. International Women in Science: A Bibliographical Dictionary to 1950 presents the enormous contributions of women outside North America in fields ranging from aviation to computer science to zoology. It provides fascinating profiles of nearly 400 women scientists, both renowned figures like Florence Nightingale and Marie Curie and women we should know better, like Rosalind Franklin, who, along with James Watson and Francis Crick, uncovered the structure of DNA. Students and researchers will see how the lives of these remarkable women unfolded, and how they made their place in fields often stubbornly guarded by men, overcoming everything from limited education and professional opportunities, to indifference, ridicule, and cultural prejudice, to outright hostility and discrimination. Included are a number of living scientists, many of whom provide insights into their lives and scientific times. Those contributions, plus additional previously unavailable material, make this a volume of unprecedented scope and richness.