- Script:
- Gardner Fox
- Pencils:
- Gil Kane
- Inks:
- Murphy Anderson
- Colors:
- ?
- Letters:
- ?
- Genre:
- science fiction
- Synopsis:
- An alien race decides to test the humans of Earth by sending three astronauts back in time and seeing how they deal with prehistoric menaces, and how they solve the problem of returning to their own time.
- Reprints:
- Script:
- ?
- Pencils:
- Howard Purcell
- Inks:
- Howard Purcell
- Colors:
- ?
- Letters:
- Ira Schnapp
- Genre:
- superhero
house ad for The Brave and the Bold, (DC, 1955 series) #51
- Script:
- ?
- Pencils:
- Curt Swan
- Inks:
- George Klein
- Colors:
- ?
- Letters:
- Ira Schnapp
- Genre:
- superhero
house ad for Superman Annual (DC, 1960 series) #8, on sale November 21
- Script:
- ?
- Pencils:
- ?
- Inks:
- ?
- Colors:
- ?
- Letters:
- Ira Schnapp
- Genre:
- superhero
house ad for Batman Annual (DC, 1961 series) #6, on sale November 14
- Script:
- Jack Schiff
- Pencils:
- Sheldon Moldoff
- Inks:
- Sheldon Moldoff
- Colors:
- ?
- Letters:
- Ira Schnapp
- Genre:
- fact
- Synopsis:
- After telling the boys some tales, the sea captain takes them to the library where they can travel anywhere just by reading.
Published in cooperation with the National Social Welfare Assembly.
Later appears in DC comics cover-dated June 1966.
- Script:
- Gardner Fox
- Pencils:
- Carmine Infantino (signed)
- Inks:
- Carmine Infantino
- Colors:
- ?
- Letters:
- Gaspar Saladino ?
- Genre:
- science fiction
- Synopsis:
- Eddie Purvis and his parents help a stranded Martian return to his people.
- Reprints: show reprint note before migration
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (April 2007).
- Script:
- Julius Schwartz ?
- Pencils:
- ?
- Inks:
- ?
- Colors:
- ?
- Letters:
- ?
- Genre:
- fact
- Script:
- Julius Schwartz
- Pencils:
- ? (logo illustration)
- Inks:
- ? (logo illustration)
- Colors:
- ? (logo illustration)
- Letters:
- typeset
Letters submitted by Joseph Farrell; Don Stanwood; Robert Malisani; Jeff Sosnaud
- Script:
- Gardner Fox
- Pencils:
- Sid Greene
- Inks:
- Sid Greene
- Colors:
- ?
- Letters:
- ?
- Genre:
- science fiction
- Characters:
- Star Rovers [Rick Purvis; Karel Sorenson; Homer Glint]
- Synopsis:
- Each of the Rovers suffers an accident on another world that makes it impossible to return to Earth.
- Reprints: show reprint note before migration
Series continued from Mystery in Space (DC, 1951 series).
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (April 2007).