Page Six reports that late literary bad boy (and Harvard alum) Norman Mailer's love letters to his mistress have been purchased by Harvard for an undisclosed amount. Mistress Carole Mallory dished some dirt to Page Six about the letters and other materials Harvard now owns: "There's a 20-page sex scene from an unpublished memoir I wrote called 'Making Love With Norman'... It's very steamy. Norman was a real man and he knew what he was......