J.D. Salinger and his sister Doris in Florida© Katherine HuberJ.D. Salinger was just 32 when he wrote The Catcher in the Rye, the novel that would secure his place in literary history. To date the book has sold over 65 million copies, but it is Salinger's only published novel, alongside his three collections of short stories. Throughout his lifetime, the man who created the ground breaking and (for the time) hugely subversive teenage protagonist, Holden Caulfield, was the foc...