Robert P. Mills with Mariam Allen DeFord (Contributor), Grendel Briarton (Contributor), Avram Davidson (Contributor), John Berry (Contributor), Winona McClintic (Contributor), Algis Budrys (Contributor), Dan Lindsay (Contributor)

Robert P. Mills with Gordon R. Dickson (Contributor), Avram Davidson (Contributor), Robert F. Young (Contributor), Grendel Briarton (Contributor), Clifford D. Simak (Contributor), Vance Aandahl (Contributor), Charles V. Devet (Contributor), William Eastlake (Contributor), Poul Anderson (Contributor)

Robert P. Mills with Rosel George Brown (Contributor), Brian W. Aldiss (Contributor), Theodore L. Thomas (Contributor), Brian C. Kelly (Contributor), Robert F. Young (Contributor), Grendel Briarton (Contributor), Marcel Aymé (Contributor), Ron Goulart (Contributor)

Robert P. Mills with Jay Williams (Contributor), John Wyndham (Contributor), John Berry (Contributor), Reginald Bretnor (Contributor), Philip José Farmer (Contributor), Zenna Henderson (Contributor), Arthur C. Clarke (Contributor)

Robert P. Mills with Kit Reed (Contributor), Richard Banks (Contributor), Evelyn E. Smith (Contributor), Nils Peterson (Contributor), Harold Calin (Contributor), Grendel Briarton (Contributor), Robert Graves (Contributor), Brian W. Aldiss (Contributor), Anne McCaffrey (Contributor)

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

Robert P. Mills with Arthur C. Clarke (Contributor), Grendel Briarton (Contributor), Doris Pitkin Buck (Contributor), Cordwainer Smith (Contributor), Randall Garrett (Contributor), John Anthony West (Contributor), Mark Twain (Contributor), Avram Davidson (Contributor), Jody Scott (Contributor), Mariam Allen DeFord (Contributor)

Robert P. Mills with Reginald Bretnor (Contributor), Knox Burger (Contributor), Poul Anderson (Contributor), Brian W. Aldiss (Contributor), Otis Kidwell Burger (Contributor), Will Mohler (Contributor), Kris Neville (Contributor), Kingsley Amis (Contributor)

Robert P. Mills with Vance Aandahl (Contributor), E. William Blau (Contributor), Morton Klass (Contributor), Kit Reed (Contributor), Harry Harrison (Contributor), Gordon R. Dickson (Contributor), Murray Leinster (Contributor), Reginald Bretnor (Contributor), Avram Davidson (Contributor), Winona McClintic (Contributor), Claude F. Cheinisse (Contributor)

Robert P. Mills with Brian W. Aldiss (Contributor), Michael Young (Contributor), Herbert Gold (Contributor), Nils T. Peterson (Contributor), Gérard Klein (Contributor), Reginald Bretnor (Contributor), Rosemary Harrison (Contributor), Floyd Wallace (Contributor)