what every girl should know . . .

It is the birthday of Margaret Sanger. A bit from Wikipedia:

In 1921, Sanger founded the American Birth Control League, which later became the Planned Parenthood Federation of America. In New York, Sanger organized the first birth control clinic staffed by all-female doctors, as well as a clinic in Harlem with an entirely African-American staff. In 1929, she formed the National Committee on Federal Legislation for Birth Control, which served as the focal point of her lobbying efforts to legalize contraception in the United States. From 1952 to 1959, Sanger served as president of the International Planned Parenthood Federation. She died in 1966, and is widely regarded as a founder of the modern birth control movement.

Some of What Every Girl Should Know is of the time and we now understand more . . . but the work Ms. Sanger did is without parallel.