Sidney Klein

The Magazine of Fantasy & Science Fiction #120

Robert P. Mills with Rick Rubin (Contributor), C. D. Heriot (Contributor), G. C. Edmondson (Contributor), Sidney Klein (Contributor), Jay Williams (Contributor), Avram Davidson (Contributor), Stephen Barr (Contributor), Reginald Bretnor (Contributor), Reginald Bretnor (Contributor), Carol Emshwiller (Contributor), Henry Slesar (Contributor)

Robert P. Mills with Stephen Barr, R. Bretnor, Rick Rubin, C.D. Heriot, Henry Slesar, Jay Williams, Avram Davidson, Alfred Bester, Carol Emshwiller, G.C. Edmondson, Isaac Asimov, Sidney Klein, Mildred Posselt, Grendel Briarton

John Novotny, Charles L. Harness, Fritz Leiber, Gerard E. Neyroud, Edward MacKin, Robert Lory, Isaac Asimov, Robert Nathan, Alan E. Nourse, Winston K. Marks, Frederik Pohl, Sidney Klein, Reginald Bretnor, Alan Arkin, Groff Conklin, G.C. Edmondson, Avram Davidson, John Robinson Pierce, R.A. Lafferty, Stephen Barr, H.F. Ellis