John R. Brinkley

John R. Brinkley was an American physician, sexologist, and writer. He is best known for his book 'The Castaways of Sex', which was a bestseller in the 1920s. Brinkley was also a pioneer in the field of sexology and wrote extensively on the subject. He was a popular lecturer and was known for his charismatic stage presence. Brinkley's work has been influential in the field of sexology and he is still widely read and studied today.