In 1963, the course of American history was changed with the publication of Betty Friedan's book, The Feminine Mystique. Over five million copies of this explosive book eventually would be sold. In the book, Friedan claimed she had lived in a "comfortable concentration camp" of New York City suburbia. And for years afterwards, Friedan claimed that her awareness of woman's rights did not coalesce until the late 1950s when she sat down to write the book in her stately mansion in Grand View-on-Hudson. But based on his analysis of Friedan's personal papers at the Smith College library, historian Daniel Horowitz...