Notes:
Letters of comment from Robert Bloch, Ray Bradbury, Dean Mullaney, Bob Shaw, Fred Childer, Bill Burnworth, Earl Wells, Clyde Talley, George deVillers, Terry Jon Vedes, Eddy Vick, David Dunn, David J. Roy, Marnin Rosenberg, James Powell, and John Schuch.
Contains two illustrations from Unknown Worlds of Science Fiction (Marvel, 1975 series) #1.