To regulate her own fertility in this way, a woman often had to overcome the stigma that birth control carried in many working class communities. Sex was taboo in most circles and even feminists steered clear of making birth control information an issue until long after WWI. Many women were brought up to believe that contraception was shameful and, for some, merely visiting a clinic was a subversive act.
In her clinics, Stopes advocated three types of reproductive planning: preventing unwanted births, spacing children in a family, and helping couples who were infertile to conceive. She was opposed to abortions and instructed her midwives to educate women about the use of contraceptive technologies. Her preferred contraceptive device was the Pro-Race cervical cap, which The London Rubber Company made to her specifications and packaged together with Stopes’ Letter to Working Mothers.