| Issue | #13 |
| Published | October 1971 |
| Frequency | bi-monthly |
| Cover Price | 0.25 USD |
| Pages | 52 |
| Editing | Stan Lee |
| Characters | Tragg |
| Genre | monsters |
| Pencils | Marie Severin |
| Inks | Frank Giacoia |
| Notes | Art credits from Nick Caputo via the GCD Errors List, 7 January 2005. |
| Characters | "Sandman"; Steve Bronson; Anne Bronson; Bobby Bronson |
| Synopsis | A family stumbles across a hostile alien made of sand. The military are helpless, but it is defeated by the family’s bookish son, who uses water to dissolve it and traps it in a bucket. |
| Genre | monsters |
| Pencils | Jack Kirby |
| Inks | Dick Ayers |
| Editing | Stan Lee (original story) |
| Notes | Narrated in the first person. This story is divided into two untitled parts (6 pp, 7 pp). |
| Reprinted | from Journey into Mystery (Marvel, 1952 series) #70 (July 1961) |
| Characters | Darius Zorn; man in black |
| Synopsis | A bigoted rich man buys a cursed forest, unconcerned with the misfortunes that befall the village. The forest's keeper takes him to another dimension, explaining that he was looking for a man who no one would miss to display in the alien zoo. |
| Genre | science fiction |
| Pencils | Don Heck |
| Inks | Don Heck |
| Editing | Stan Lee (original story) |
| Notes | Narrated in the first person. |
| Reprinted | from Journey into Mystery (Marvel, 1952 series) #61 (October 1960) |
| Synopsis | An artist finds an alien pencil that will make whatever he draws real, but his selfish use of it makes the aliens take it back. |
| Genre | science fiction |
| Pencils | Jack Kirby |
| Inks | Dick Ayers |
| Editing | Stan Lee (original story) |
| Reprinted | from Tales to Astonish (Marvel, 1959 series) #31 (May 1962) |
| Characters | Mary Brown; "The Thing from the Hidden Swamp" (only referred to as such in title) |
| Synopsis | A plain girl helps a stranded alien, and is made beautiful as a reward. |
| Genre | science fiction |
| Pencils | Jack Kirby |
| Editing | Stan Lee (original story) |
| Reprinted | from Tales to Astonish (Marvel, 1959 series) #30 (April 1962) |
| Characters | Tragg; David Arnstead |
| Synopsis | Reporter David Arnstead investigates the shut-down of a New York City subway line and finds Tragg, a subterranean monster that kills anything human it encounters. |
| Genre | monsters |
| Script | Gerry Conway |
| Pencils | Syd Shores |
| Inks | Syd Shores |
| Letters | Sam Rosen |
| Notes | New story in the style of the earlier Lee/Kirby/Ditko monster tales. |
| Reprinted | in Where Monsters Dwell (Marvel, 1970 series) #33 (January 1975) |