Two hard-working professors succeed in creating a process to enlarge the size of living organisms, but when they try the process on human beings, and succeed with dreadful results, the Man of Steel must intervene.

Contents

1. World's Greatest Adventure Character (Superman)
2. The Giants of Professor Zee (Superman)
3. Supermen of America
4. Laffs (gag strip)
5. Nature News.... (information)
6. The Fifth Column (Superman)
7. Superman Licensed Products (Superman merchandise)
8. The Carnival Crooks (Superman)
9. [Batman & Robin & Lionel Trains ads]
10. Knotty Problem (text story surrounded by ads)
11. Here It Is: All-Star No. 3 (ad)
12. Snapshots With Our Candid Cartoon Camera (gag strip)
13. Perrone and the Drug Gang (Superman)
14. Training Counts in Building Score (ad)
15. Superman Plus (ad for Action Comics)