DC January, 1961
Reprints from Action Comics #226 (Mar 1957), #242 (Jul 1958) and #252 (May 1959), Superman (1st Series) #87 (Feb 1954) and #127 (Feb 1959), and Superboy (1st Series) #68 (Oct 1958); Reprints page 2 of Action Comics #1 (Jun 1938); Origin of Metallo (John Corben); Origin of Titano; Versus Brainiac; Versus Metallo; Versus Titano; An all-star line-up of the greatest super-villains ever featured!; Superman acquires the Bottle City of Kandor; Superman, Metallo, Brainiac, Bizarro, Superboy; Time travel
The Invulnerable Enemy; The Menace of Metallo!; Titano the Super-Ape!; The Thing From 40,000 A.D.!; The Amazing Bizarro; The Runaway Super-Creature; The Battle With Bizarro; Superman’s Super Vision (text); Glossary of Kryptonian Names (text); The Super-Duel in Space
Otto Binder, Robert Bernstein, Bill Woolfolk
Wayne Boring, Al Plastino, George Papp