| Issue | #40 |
| Published | April 1963 |
| Frequency | monthly |
| Cover Price | 0.12 USD |
| Pages | 36 |
| Editing | Stan Lee |
| Notes | Distributed to newstands in January 1963. This issue includes 10 pages of paid advertisements. Distribution date from Joseph Marek's Marvel Comics Group history website. |
| Characters | Iron Man [Tony Stark]; Gargantus |
| Genre | superhero |
| Pencils | Jack Kirby |
| Inks | Don Heck |
| Letters | Artie Simek |
| Reprinted | in Marvel Masterworks (Marvel, 1987 series) #20 (1992); in Essential Iron Man (Marvel, 2000 series) #1 (2000) [black and white]; in Marvel Masterworks: The Invincible Iron Man (Marvel, 2003 series) #1; in Tales of Suspense No. 39 (Marvel, 2006 Series) #[nn] (February 2006); in Iron Man Omnibus (Marvel, 2008 series) #1 (2008) |
| Characters | Iron Man [Tony Stark]; Gargantus (introduction, origin) |
| Genre | superhero |
| Script | Stan Lee (plot); Robert Bernstein [as R. Berns] (script) |
| Pencils | Jack Kirby |
| Inks | Don Heck |
| Letters | Jon D'Agostino [as Duffi] |
| Notes | Letters credit from George Olshevsky's Marvel Comics Index. |
| Reprinted | in Marvel Collectors' Item Classics (Marvel, 1965 series) #3 (June 1966); in Marvel Masterworks (Marvel, 1987 series) #20 (1992); in Essential Iron Man (Marvel, 2000 series) #1 (2000) [black and white]; in Marvel Masterworks: The Invincible Iron Man (Marvel, 2003 series) #1; in Tales of Suspense No. 39 (Marvel, 2006 Series) #[nn] (February 2006); in Iron Man Omnibus (Marvel, 2008 series) #1 (2008) |
| Characters | Joey Doakes; Phil Turner |
| Synopsis | An ordinary man realizes that he is really a medieval knight. |
| Genre | occult |
| Letters | typeset |
| Notes | Text story with illustration. The first page of this story is printed between the pages of the Iron Man story, while the second is printed between the two back-up stories. The last page is split with the statement of ownership. |
| Reprinted | from Uncanny Tales (Marvel, 1952 series) #39 (January 1956) |
| Characters | Frans Ridderkerk; Henrick Rammp |
| Synopsis | An unsuccessful artist tries to force a new painter to show him how to paint lifelike pictures. The painter is a sorcerer, and traps the artist in one of his paintings, the secret to his realism. |
| Genre | occult |
| Script | Stan Lee (plot), Larry Lieber (script) |
| Pencils | Larry Lieber |
| Inks | Sol Brodsky |
| Letters | Vivian Berg |
| Letters | typeset |
| Notes | Average sales per issue October 1961–September 1962 (issues #26–36), despite monthly cover dates): 126,140. This shares the last page of "Wrong Number". |
| Synopsis | A man from the future arrives in the present day in order to set himself up as ruler. He attempts to extort 100 million dollars from the Secretary General of the United Nations only to be shocked when the Secretary reveals that he too is from the future and that there are agents planted in every era in order to apprehend criminals who may attempt to alter the course of events. |
| Genre | science fiction |
| Script | Stan Lee |
| Pencils | Steve Ditko |
| Inks | Steve Ditko |
| Letters | Artie Simek |