| Issue | #20 |
| Published | March 1973 |
| Frequency | bi-monthly |
| Cover Price | 0.20 USD |
| Pages | 36 |
| Editing | Roy Thomas |
| Characters | Klagg |
| Genre | science fiction |
| Pencils | Jim Starlin |
| Inks | Frank Giacoia |
| Notes | Original indexer credited Gil Kane as cover co-penciler. |
| Characters | Klagg; Philip; Claire |
| Synopsis | Klagg, an alien who visits Earth, becomes so upset upon learning humanity still wages war that he declares war upon the nations of the Earth. |
| Genre | science fiction |
| Script | Stan Lee ?; Larry Lieber ? |
| Pencils | Jack Kirby (signed) |
| Inks | Dick Ayers (signed) |
| Letters | Artie Simek |
| Notes | This story is divided into two parts: an untitled part one (6 pp) and part two—"Klagg" (7 pp). |
| Reprinted | from Tales of Suspense (Marvel, 1959 series) #21 (September 1961) |
| Synopsis | The statue of the Dutch boy plugs the hole in the dike with his finger. |
| Genre | occult |
| Pencils | Kurt Schaffenberger |
| Inks | Kurt Schaffenberger |
| Reprinted | from Mystery Tales (Marvel, 1952 series) #41 (May 1956) |
| Characters | Harry Brown; Albert Poole |
| Synopsis | A brilliant inventor's boss tries to steal his new time machine in order to take credit for it. He uses the time machine to travel to a different time, but ends up in the prehistoric period, where the electricity to power the time machine cannot be found. |
| Genre | science fiction |
| Pencils | Dick Ayers (signed) |
| Inks | Dick Ayers (signed) |
| Letters | Artie Simek |
| Notes | Though many details are changed, this story is a retelling of "Behold! I Am the Master of Time!" drawn by Steve Ditko in Tales to Astonish (Marvel, 1959 series) #14 (December 1960). |
| Reprinted | from Tales to Astonish (Marvel, 1959 series) #29 (March 1962) |