| Issue | #21 |
| Published | June 1963 |
| Cover Price | 0.12 USD |
| Pages | 36 |
| Editing | Julius Schwartz |
| Characters | Green Lantern [Hal Jordan] |
| Genre | Superhero |
| Pencils | Gil Kane |
| Inks | Murphy Anderson |
| Reprinted | in Green Lantern Archives (DC, 1993 series) #3 (April 2001); in Showcase Presents Green Lantern (DC, 2005 series) #2 (February 2007) |
| Characters | Green Lantern [Hal Jordan]; Pieface [Thomas Kalmaku]; Dr. Polaris (first appearance; villain; origin) |
| Synopsis | The origin of Dr. Polaris. |
| Genre | Superhero |
| Script | John Broome |
| Pencils | Gil Kane |
| Inks | Joe Giella |
| Notes | Script, pencil and inking redits confirmed in letters page of Green Lantern #24 (1963). |
| Reprinted | in Green Lantern Archives (DC, 1993 series) #3 (April 2001); in Showcase Presents Green Lantern (DC, 2005 series) #2 (February 2007) |
| Characters | Green Lantern [Hal Jordan]; Carol Ferris; Carl Ferris; Mrs. Ferris; Pieface [Thomas Kalmaku]; Pierre (villain) |
| Synopsis | After helping to catch some art thieves, Carl Ferris begins to suspect Hal Jordan is really Green Lantern. |
| Genre | Superhero |
| Script | Gardner Fox |
| Pencils | Gil Kane |
| Inks | Murphy Anderson |
| Reprinted | in Green Lantern Archives (DC, 1993 series) #3 (April 2001); in Showcase Presents Green Lantern (DC, 2005 series) #2 (February 2007) |