Challengers of the Unknown #37

In "The Triple Terror of Mr. Dimension," the Challengers of the Unknown face a deadly threat from a late professor's automated vengeance, as his robots carry out a scheme he never lived to see. Written by Ed Herron and brought to life with bold art by Bob Brown—both pencils and inks—this 1964 DC adventure delivers suspense with a cold, mechanical precision. The cover by Bob Brown captures the eerie tension of the unseen menace.