By the '40s and '50s, medical researchers were starting to study trans medicine, but they were aided by their trans patients, like Louise Lawrence, a trans woman who had corresponded extensively with people who had been arrested for public cross-dressing.
Nos anos 40 e 50, investigadores médicos começaram a estudar medicina transexual, ajudados pelos seus  pacientes transexuais, como Louise Lawrence, uma transexual que se correspondera extensamente com pessoas que tinham sido presas por usarem roupas trocadas em público.