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UNITED KINGDOM - FEBRUARY 27: �Racial� brand, size 2 contraceptive cap, made by BCM, supplied by the Mothers's Clinic and modified by Marie Stopes. Stopes (1880-1958) studied in London and Munich, graduating with a degree in botany in 1901, and becoming the youngest female doctor of science in 1904. However, she is best remembered as a feminist and pioneer advocate of birth control. Alarmed by the lack of equality within the marriage relationship, Stopes wrote �Married Love� (1916), a book about feminism and marriage. This was followed by a guide to contraception �Wise Parenthood� (1918). In 1921, in the face of opposition from the Church, Stopes founded the Society for Constructive Birth Control and opened the first of her birth-control clinics in Holloway, North London. (Photo by SSPL/Getty Images)