The Baby Trap

Published in 1971 - This was one of the earliest books to advocate that being childfree was a valid option for a woman. Of course, back in 1971 there was no such word as childfree - she calls it being 'voluntary childless'. Some of her reasons include overpopulation, available resources for babies and children, and the state of marriage. But being written back then also means lots of stereotypes that would be considered sexist today. For example, one advantage of being childless is having more time for "pleasing your husband."