| Issue | #15 |
| Published | June 1942 |
| Cover Price | 0.10 USD |
| Pages | 68 |
| Editing | Stan Lee |
| Characters | Captain America [Steve Rogers]; Bucky [Bucky Barnes] |
| Genre | superhero |
| Pencils | Al Avison |
| Inks | Al Avison |
| Reprinted | in Marvel Masterworks: Golden Age Captain America (Marvel, 2005 series) #4 (2010) |
| Characters | Captain America [Steve Rogers]; Bucky [Bucky Barnes] |
| Synopsis | Illustrated contents page listing features in the book with brief synopses. |
| Genre | superhero |
| Pencils | Al Avison |
| Inks | Al Avison |
| Letters | typeset |
| Notes | Found on the inside front cover. |
| Reprinted | in Marvel Masterworks: Golden Age Captain America (Marvel, 2005 series) #4 (2010) |
| Characters | Captain America [Steve Rogers]; Bucky [Bucky Barnes]; Sergeant Michael Duffy; Betty Ross; Fritz Krone (villain, introduction); Moeller (villain, introduction); other Nazis (villains) |
| Synopsis | As the Nazis mine a tunnel in the East River, Cap and Bucky shut down a Fifth Column that is attempting to sap American morale to resist Hitler's goons so that New York City can be captured. |
| Genre | superhero |
| Script | Otto Binder ? |
| Pencils | Al Avison (signed) |
| Inks | Syd Shores (signed) |
| Reprinted | in Marvel Masterworks: Golden Age Captain America (Marvel, 2005 series) #4 (2010) |
| Characters | Captain America [Steve Rogers] |
| Synopsis | Illustrated house ad for Captain America's Sentinels of Liberty. |
| Genre | superhero |
| Pencils | Al Avison ? |
| Inks | Al Avison ? |
| Letters | ?; typeset (most) |
| Notes | Sequence added by Craig Delich 2010-7-27. |
| Reprinted | in Marvel Masterworks: Golden Age Captain America (Marvel, 2005 series) #4 (2010) |
| Characters | The Imp; Jefferson Vandermeer; Morpheus (introduction, god of sleep--Timely's Sandman!); Nightmare (Morpheus' horse) |
| Synopsis | Morpheus decides to give Jefferson the nightmare of his life, but doesn't reckon with the Imp! |
| Genre | occult; adventure |
| Script | Stan Lee (signed) |
| Pencils | Chad Grothkopf [as Chad] (signed) |
| Inks | Chad Grothkopf [as Chad] (signed) |
| Reprinted | in Marvel Masterworks: Golden Age Captain America (Marvel, 2005 series) #4 (2010) |
| Characters | Captain America [Steve Rogers]; Bucky [Bucky Barnes] |
| Synopsis | Two-page illustrated PSA for Captain America's War Fund, which encourages readers to buy one less comic per month and, instead, send it to Cap's war fund and the money will be forwarded to President Roosevelt in care of the Treasurer of the U.S. to help fight the Japanese. |
| Genre | superhero |
| Script | Martin Goodman (signed) |
| Pencils | Al Avison |
| Inks | Al Avison |
| Letters | typeset |
| Notes | Sequence added by Craig Delich 2010-7-27. |
| Reprinted | in Marvel Masterworks: Golden Age Captain America (Marvel, 2005 series) #4 (2010) |
| Characters | Sub-Mariner [Prince Namor] |
| Synopsis | Illustrated house ad for Sub-Mariner Comics #5. |
| Genre | superhero |
| Pencils | Lee King [as Lee] (signed) |
| Inks | Lee King [as Lee] (signed) |
| Notes | Sequence added by Craig Delich 2010-7-27. |
| Reprinted | in Marvel Masterworks: Golden Age Captain America (Marvel, 2005 series) #4 (2010) |
| Characters | Dave; Sam; Mr. Lewis (grocery store owner) |
| Synopsis | Behind on the mortgage to the property their mother owns, Dave and Sam agree to sell their mother's diamonds to help pay off that mortgage. However, while on his way to town for that very purpose, Dave discovers strange fish in the Lost River Cave, fish that he can easily sell to pay off that mortgage. |
| Genre | adventure |
| Letters | typeset |
| Reprinted | in Marvel Masterworks: Golden Age Captain America (Marvel, 2005 series) #4 (2010) |
| Characters | Captain America [Steve Rogers]; Bucky [Bucky Barnes]; Sergeant Michael Duffy; The Gool [Ludwig] (villain, introduction) and his Martians (villains, introduction, Nazi agents) |
| Synopsis | Cap and Bucky take the fight to a group of Martians who have invaded Gotham City, intending to seize it, but Cap smells a rat when a Martian weapon turns out to be a German Lugar in disguise! |
| Genre | superhero |
| Script | Otto Binder |
| Pencils | Al Avison |
| Inks | Al Avison |
| Notes | Cap operates in Gotham City. |
| Reprinted | in Marvel Masterworks: Golden Age Captain America (Marvel, 2005 series) #4 (2010) |
| Characters | The Human Torch [Jim Hammond] |
| Synopsis | Illustratede house ad for the Spring, 1942 issue of the Human Torch Comics, #7. |
| Genre | superhero |
| Pencils | Lee King [as Lee] (signed) |
| Inks | Lee King [as Lee] (signed) |
| Notes | Sequence added by Craig Delich 2010-7-27. |
| Reprinted | in Marvel Masterworks: Golden Age Captain America (Marvel, 2005 series) #4 (2010) |
| Characters | The Secret Stamp [Roddy Colt]; Spud Sickles; Jerry Dash (news reporter); Mary Sickles; Mr. Corbey; Grandma (villain, introduction); Butch (villain); un-named spy (villain) |
| Synopsis | Roddy gets the surprise of his life when he sees another "Secret Stamp" captured by a group of Nazi spies, who have been ordered by Hitler to kill the Secret Stamp! |
| Genre | superhero |
| Script | Stan Lee |
| Pencils | Don Rico |
| Inks | Don Rico |
| Reprinted | in Marvel Masterworks: Golden Age Captain America (Marvel, 2005 series) #4 (2010) |
| Characters | Captain America [Steve Rogers]; Bucky [Bucky Barnes] |
| Synopsis | Illustrated club page in which Cap urges readers to continue to buy Defense Stamps for victory, while Bucky asks readers how they like The Imp and for them to remain patient while their drawings sent in for a contest are being looked at and judged. |
| Genre | superhero |
| Pencils | Al Avison |
| Inks | Al Avison |
| Letters | ?; typeset (most) |
| Notes | Found on the inside back cover. Sequence added by Craig Delich 2010-7-27. |
| Reprinted | in Marvel Masterworks: Golden Age Captain America (Marvel, 2005 series) #4 (2010) |