The Lamaze method is virtually synonymous with natural childbirth in America. In the 1970s, taking Lamaze classes was a common rite of passage to parenthood. The conscious relaxation and patterned breathing techniques touted as a natural and empowering path to the alleviation of pain in childbirth resonated with the feminist and countercultural values of the era. In Lamaze, historian Paula A. Michaels tells the surprising story of the Lamaze...