| Issue | #30 |
| Published | April 1962 |
| Frequency | monthly |
| Cover Price | 0.12 USD |
| Pages | 36 |
| Editing | Stan Lee |
| Notes | Distributed to newstands in January 1962. This issue includes 10 pages of paid advertisements. Distribution date from Joseph Marek's Marvel Comics Group history website. |
| Characters | "Thing from the Hidden Swamp" (only referred to as such in title); Mary Brown; Gorilla-Man [Franz Radzic] |
| Genre | science fiction |
| Pencils | Jack Kirby |
| Inks | Sol Brodsky |
| Notes | Cover inks credit from Nick Caputo via the GCD Error List (30 January 2009); the original indexer credited Dick Ayers. |
| Reprinted | in Marvel Masterworks: Atlas Era Tales to Astonish (Marvel, 2006 series) #3 (2010); in Gorilla Man (Marvel, 2010 series) #3 |
| Characters | Gorilla-Man [Franz Radzik]; Professor Stuyvesant |
| Synopsis | The Gorilla-Man escapes and tries to get himself transformed back into a human, but instead he is blasted into space in an experimental space capsule. |
| Genre | science fiction |
| Pencils | Jack Kirby |
| Inks | Dick Ayers |
| Notes | Despite the end of the story in Tales to Astonish #28 seemingly indicating Gorilla-Man's mind regressing to that of a beast, in this issue Gorilla-Man's mental facility seems to be completely unimpaired. Job number speculative on the basis of other stories in this issue. |
| Reprinted | in Fear (Marvel, 1970 series) #5 (November 1971); in Secrets of the Unknown (Alan Class, 1962 series) #230; in Marvel Masterworks: Atlas Era Tales to Astonish (Marvel, 2006 series) #3 (2010); in Gorilla Man (Marvel, 2010 series) #3 |
| Characters | Mrs. Gerrity; Tom Gerrity; Officer O'Malley; Logarithm |
| Synopsis | An old-fashioned shopkeeper unwittingly saves the life of a boy from Mechanica when her remedy oil lubricates the gears in his brain. |
| Genre | science fiction |
| Pencils | Marie Severin |
| Inks | Marie Severin |
| Letters | typeset |
| Notes | Text story with illustrations. |
| Reprinted | from Uncanny Tales (Marvel, 1951 series) #54 (April 1957) |
| 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 |
| Notes | The last page includes an advertisement for Fantastic Four (Marvel, 1961 series), also drawn by Jack Kirby. |
| Reprinted | in Monsters on the Prowl (Marvel, 1971 series) #13 (October 1971); in Journey into Mystery (Marvel, 1972 series) #18 (August 1975); in Marvel Masterworks: Atlas Era Tales to Astonish (Marvel, 2006 series) #3 (2010) |
| Characters | Willy Sloane; Mr. Jordan |
| Synopsis | An oddly cheerful elevater operator is held at gunpoint with a passer-by by a spy planning to blow up the hotel. The elevator lets the spy off at the 13th floor, and while the passer-by is terrified, the elevator operator simply fades away, explaining that the bomb will never go off, since there is no 13th floor. |
| Genre | occult |
| Pencils | Don Heck |
| Inks | Don Heck |
| Reprinted | in Creatures on the Loose (Marvel, 1971 series) #14 (November 1971); in Crypt of Shadows (Marvel, 1973 series) #18 (July 1975); in Marvel Masterworks: Atlas Era Tales to Astonish (Marvel, 2006 series) #3 (2010) |
| Characters | Quogg |
| Synopsis | A fugitive hides in an enclosure said to contain a horrible monster, and realizes too late that the monster appeared to be an ordinary hut. |
| Genre | occult |
| Script | Stan Lee |
| Pencils | Steve Ditko |
| Inks | Steve Ditko |
| Notes | The last page includes an advertisement for Amazing Adult Fantasy (Marvel, 1961 series), also by Lee and Ditko. |
| Reprinted | in Where Monsters Dwell (Marvel, 1970 series) #12 (November 1971); in Vault of Evil (Marvel 1973 series) #20 (August 1975); in Marvel Masterworks: Atlas Era Tales to Astonish (Marvel, 2006 series) #3 (2010) |