This series contains correspondence sent to William Kennedy from fellow authors, journalists, politicians, and members of the film industry. Most notably, the files document his relationships with other well-known writers of American literature, especially his decades-long friendships with mentor Saul Bellow and Hunter S. Thompson. Also included is correspondence with Philip Roth, Joyce Carol Oates, Frank McCourt, Doris Grumbach, John Updike, and more. Materials include letters, greeting cards, post cards, fax transmissions, e-mail and one Western Union mailgram. Nearly all of the other series also include correspondence related to the respective series.