Planet Stories, September 1951

Vol. 5, No. 2. The cover artist is not credited but Strauss, Contento, and Ashley credit Anderson. No editor is credited. Contento credits O'Sullivan but Ashley does have such a credit although he does credit Malcolm Reiss as editor-in-chief for the entire series. Interior art credits based on signatures. J. T. McIntosh's last name is spelled MacIntosh in both the table of contents and the title page of the story. The Hank Kass signature for the artwork on page 44 is not fully legible. "The Star-Fool" is listed as such on the title page and headers of the story but as "The Star Fool" on the table of contents. "Vengeance on Mars!" is listed as such on the title page and headers of the story but as "Vengeance on Mars" on the table of contents.