In 1944, writer Laura Hobson thought her project might be too bold. Her friend, who wasn’t Jewish, convinced her otherwise.

Best friends, on the other hand ... ready to sit down and pen the the most brilliant and expletive-laden letter of all time. An anonymous woman (let’s call her Charlotte, for ease) has done ...

Letters come with the promise of intimacy and privacy. They allow us to open up in ways that we wouldn’t otherwise. “I’m a ...