"Let My People Grow!"
Chapter Two: "The Lilliput Problem!"
Chapter Three: "All Creatures Great and Small...!"
Frustrated with the situation of his fellow Kryptonians, trapped in the shrunken city of Kandor, Superman sets out on a final ditch effort to restore the city. After testing the solution on himself, finding it works, he and Supergirl set out for a distant world as a destination spot to enlarge Kandor.
Reprinted in The Best of DC #59.