| Issue | #12 |
| Published | May 1939 |
| Cover Price | 0.10 USD |
| Pages | 68 |
| Editing | Vincent Sullivan |
| Characters | Zatara; Superman [inset]. |
| Genre | occult |
| Pencils | Fred Guardineer (signed Guardineer) |
| Inks | Fred Guardineer (signed Guardineer) |
| Letters | typeset |
| Reprinted | In Superman: The Action Comics Archives (DC, 1997 series) #1. |
| Genre | fact |
| Pencils | Sheldon Moldoff |
| Inks | Sheldon Moldoff |
| Notes | Found on the inside front cover. |
| Characters | Superman [Clark Kent]; George Taylor (unnamed) |
| Synopsis | Clark Kent witnesses the death of a dear friend of his at the hands of a reckless driver, and when the Mayor refuses to deal with the problem, Superman decides to wage war on these drivers himself! |
| Genre | superhero |
| Script | Jerry Siegel (signed) |
| Pencils | Joe Shuster (signed); Paul Cassidy ? |
| Inks | Joe Shuster (signed) |
| Notes | The last panel on page 13 features an illustrated [by Bob Kane] ad for the new feature beginning that month in Detective Comics: the Batman! Notes and synopsis added by Craig Delich 8-10-08. |
| Reprinted | In Superman: The Action Comics Archives (DC, 1997 series) #1. |
| Characters | Scoop Scanlon |
| Genre | adventure |
| Pencils | Will Ely (signed) |
| Inks | Will Ely (signed) |
| Notes | Printed in red, black and white. |
| Characters | Pep Morgan |
| Genre | adventure |
| Script | Gardner F. Fox |
| Pencils | Fred Guardineer (signed as Gene Baxter) |
| Inks | Fred Guardineer (signed as Gene Baxter) |
| Notes | Continued in next issue. Writer credit added by Craig Delich 8-10-08. |
| Genre | fact |
| Script | Paul Gustavson |
| Pencils | Paul Gustavson |
| Inks | Paul Gustavson |
| Notes | Writer credit added by Craig Delich 8-10-08. |
| Genre | fact |
| Pencils | Gill Fox |
| Inks | Gill Fox |
| Characters | Marco Polo |
| Genre | period |
| Pencils | Sven Elven |
| Inks | Sven Elven |
| Letters | Sven Elven |
| Notes | Letterer credit added by Craig Delich 8-10-08. |
| Genre | adventure |
| Script | Richard Martin (signed) |
| Pencils | ? (spot illos) |
| Inks | ? (spot illos) |
| Letters | typeset |
| Characters | Tex Thomson |
| Genre | adventure |
| Script | Ken Fitch? |
| Pencils | Bernard Baily (signed) |
| Inks | Bernard Baily (signed) |
| Letters | Bernard Baily |
| Notes | Letterer credit added by Craig Delich 8-10-08. |
| Genre | fact |
| Pencils | Sheldon Moldoff |
| Inks | Sheldon Moldoff |
| Genre | fact |
| Pencils | Sheldon Moldoff |
| Inks | Sheldon Moldoff |
| Characters | Chuck Dawson |
| Genre | adventure |
| Pencils | Homer Fleming (signed as H. Fleming) |
| Inks | Homer Fleming (signed as H. Fleming) |
| Notes | Printed in red, black and white. |
| Characters | Zatara; Tong. |
| Genre | occult |
| Script | Gardner F. Fox |
| Pencils | Fred Guardineer |
| Inks | Fred Guardineer |
| Notes | Tong is in costume ???. |
| Genre | aviation |
| Pencils | Terry Gilkison |
| Inks | Terry Gilkison |