Joseph Lee (March 8, 1862 – July 28, 1937) was a wealthy Bostonian who trained as a lawyer but never practiced law, and is considered the "founder of the playground movement". He was a social worker, author, and philanthropist. Lee believed that community life could be strengthened by playgrounds and play. Lee was also a proponent of eugenics and a major financial supporter of the Immigration Restriction League, a Boston-based group that promoted race-based eugenics as a basis for restricting immigration from eastern and southern Europe. Source: Wikipedia (en)