JD Salinger thought of including his generation’s idea of a trigger alert as he worked on ‘The Catcher in the Rye.’ In an early draft of the 1951 novel, narrator Holden Caulfield warns that the story will include “quite a bit of swearing and sex stuff.”

You’ll finally be able to catch the late J.D. Salinger’s books in digital format. Longtime Salinger publisher Little, Brown and Company said all four of his works, including “The Catcher in the Rye,” will be made available as e-books Tuesday, marking the first time that the entirety of his published work will be available in digital format.