The Eugenics Society Archive (Wellcome Library)"For much of the 20th century, the Eugenics Society sought to increase public understanding of heredity and to influence parenthood in Britain, with the aim of biological improvement of the nation and mitigation of the burdens deemed to be imposed on society by the genetically 'unfit'. It was never a mass participation organisation: membership peaked at around 800 in its 1930s heyday. However, its members included a diverse range of influential figures, and it maintained a high profile through its programme of education and propaganda. "