| Issue | #40 |
| Published | October 1965 |
| Cover Price | 0.12 USD |
| Pages | 36 |
| Editing | Julius Schwartz |
| Characters | Green Lantern [Hal Jordan]; Green Lantern [Alan Scott]; The Guardians of the Universe |
| Genre | Superhero |
| Pencils | Gil Kane |
| Inks | Murphy Anderson |
| Reprinted | in Green Lantern Archives (DC, 1993 series) #6 (January 2007); in Showcase Presents Green Lantern (DC, 2005 series) #3 (May 2008) |
| Characters | Green Lantern [Hal Jordan]; Green Lantern [Alan Scott] (Earth-2); Doiby Dickles (Earth-2); The Guardians of the Universe (origin); Green Lantern [Ki-Nilg] (first appearance; flashback); Krona (first appearance; villain; origin) |
| Synopsis | Hal Jordan and Alan Scott team up to fight the Guardians oldest adversary... Krona. |
| Genre | Superhero |
| Script | John Broome |
| Pencils | Gil Kane |
| Inks | Sid Greene |
| Notes | This story sows the seeds that evolve into the Crisis On Infinite Earths. 1st team-up with the Earth-2 Green Lantern. Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (April 2007). |
| Reprinted | in DC Special Blue Ribbon Digest (DC, 1980 series) #4 (September-October 1980); in Green Lantern Archives (DC, 1993 series) #6 (January 2007); in Showcase Presents Green Lantern (DC, 2005 series) #3 (May 2008) |
| Characters | Cuckoo Bird; Gramps |
| Notes | Ad for General Mills Cocoa Puffs. |
| Characters | Little Pete |
| Genre | children |
| Script | Jack Schiff ? |
| Pencils | Henry Boltinoff |
| Inks | Henry Boltinoff |
| Letters | Henry Boltinoff |
| Characters | Kat; George Barris |
| Notes | Ad for Kat model car from AMT Corporation. |
| Script | Julius Schwartz |
| Letters | typeset |
| Notes | Letters from readers - Mike Flesher, Donald D. Ensign and Alan Busby - and responses from Julius Schwartz. |
| Characters | Rocky; Bullwinkle |
| Genre | Humor |
| Notes | Ad for General Mills Cheerios. |
| Characters | Trix |
| Genre | Humor |
| Script | Henry Boltinoff ? |
| Pencils | Henry Boltinoff |
| Inks | Henry Boltinoff |
| Letters | Henry Boltinoff |
| Notes | Ad for General Mills Trix cereal. |
| Genre | Humor |
| Script | Henry Boltinoff |
| Pencils | Henry Boltinoff |
| Inks | Henry Boltinoff |
| Letters | Henry Boltinoff |