Short stories in the form of letters.
CM Kornbluth, Chan Davis, Patricia Nurse, Ray Russell, William Sambrot, Judith Merril, Fredric Brown, Jack Lewis, Mildred Clingerman, A.E. van Vogt, Dean Lambe, Howard Fast, Daniel Keys, George Martin, Sharon Webb, Barry Malzberg, Christopher Anvil, Anthony Lewis, HB Piper and Gordon R. Dickson