Robert P. Mills with Damon Knight (Contributor), George P. Elliott (Contributor), Eleazar Lipsky (Contributor), Charles L. Fontenay (Contributor), G. C. Edmondson (Contributor), Joel Townsley Rogers (Contributor), Idris Seabright (Contributor), Jane Rice (Contributor), Reginald Bretnor (Contributor), Raymond E. Banks (Contributor), Judith Merril (Contributor)

Robert P. Mills with Avram Davidson (Contributor), Chad Oliver (Contributor), A. Bertram Chandler (Contributor), Jack London (Contributor), Miriam Allen Deford (Contributor), Reginald Bretnor (Contributor), Robert Graves (Contributor), J. T. McIntosh (Contributor), Ron Goulart (Contributor), Rosel George Brown (Contributor)

Robert P. Mills with Grendel Briarton (Contributor), Josef Burger (Contributor), Claud Cockburn (Contributor), Robert Arthur (Contributor), James Blish (Contributor), Charles G. Finney (Contributor), Philip José Farmer (Contributor), Lee Sutton (Contributor), Robert F. Young (Contributor)

Robert P. Mills with Howard Fast (Contributor), Lou Tabakow (Contributor), Reginald Bretnor (Contributor), Raymond E. Banks (Contributor), H. M. Sycamore (Contributor), Jane Roberts (Contributor), Elizabeth Mann Borgese (Contributor), Avram Davidson (Contributor), Robert F. Young (Contributor)

Robert P. Mills with Carol Emshwiller (Contributor), Reginald Bretnor (Contributor), Poul Anderson (Contributor), Kit Reed (Contributor), Poul Anderson (Contributor), Isaac Asimov (Contributor), Marcel Aymé (Contributor), Ray Russell (Contributor), Jay Williams (Contributor)

Robert P. Mills with Joanna Russ (Contributor), Edward S. Aarons (Contributor), Robert Graves (Contributor), Will Stanton (Contributor), Edgar Pangborn (Contributor), Reginald Bretnor (Contributor), Leslie Bonnet (Contributor), Robert Arthur (Contributor)

Robert P. Mills with Damon Knight (Contributor), Zenna Henderson (Contributor), Poul Anderson (Contributor), Alfred Bester (Contributor), Robert Heinlein (Contributor), Theodore Sturgeon (Contributor), Hassoldt Davis (Contributor), Grendel Briarton (Contributor), Avram Davidson (Contributor), Charles G. Finney (Contributor)

Robert P. Mills with John Collier (Contributor), Reginald Bretnor (Contributor), James Blish (Contributor), Wade Miller (Contributor), Robert Heinlein (Contributor), Howard Fast (Contributor), Will Worthington (Contributor), Jules Verne (Contributor), G. C. Edmondson (Contributor)

Robert P. Mills with Stephen Barr (Contributor), Mark Clifton (Contributor), Jane Rice (Contributor), Gerard E. Neyroud (Contributor), Robert Nathan (Contributor), Grendel Briarton (Contributor), Marcel Aymé (Contributor)

Robert P. Mills with Holley Cantine (Contributor), David R. Bunch (Contributor), Nathalie Henneberg (Contributor), Poul Anderson (Contributor), Clifford D. Simak (Contributor), G. C. Edmondson (Contributor), Eric Frank Russell (Contributor), Reginald Bretnor (Contributor)