On sale date from the publication date found at the Catalog of Copyright Entries, Part 2, Periodicals, New Series, Volume 35, 1940, Number 2. Second class permit. Copyright number 455852.
The Space Rovers [Ted Hunt; Jane Martin]; Amok (introduction, death); King Tharrko (introduction); Venusians (introduction); The "evil gods" (villains, introduction, death)
Dan Williams, Private Investigator; Collins (villain, introduction); Dr. Palumbo (villain, introduction); Miss Adams (secretary); Miss Neering (a nurse)
Indexer Notes
Previously credited to R. Lowry. Regular artist Ray Thayer's full name is Raymond Lowry Thayer.
The Sphinx [Ellsworth Forrester]; Tom; Countess Donya Petrovich (introduction); Prince Alexis (introduction); Whitford (villain, introduction); Blackie Lewis (villain, introduction)