Marion Zimmer Bradley & Forrest J. Ackerman & Charles Nuetzel & Kendell Foster Crossen & Donald A. Wollheim & Sam Merwin Jr. & Ray Bradbury & Walter Van Tilburg Clark & Robert Arthur & Henry Kuttner & Richard Matheson & Theodore Sturgeon & Ward Moore & A. E. Van Vogt & Leigh Brackett & Bruce Elliot & Anthony Boucher