In the mid-1950s she traveled to the US to work at the
James Jackson Putnam Center which treated autistic children through what today is seen as behavior therapy and began to extensively study, research and write about autism in what are some of the earliest writings on the condition. She returned to London and published her first book
Autism and Childhood Psychosis in 1972 followed by three more books and numerous journal articles, translated worldwide, up until her death, at age 81, in 1994. ==Legacy==