| Issue | #77 |
| Published | December 1969 |
| Cover Price | 0.15 USD |
| Pages | 36 |
| Editing | Julius Schwartz |
| Notes | Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (added by Gregory Fischer, June 2009). |
| Characters | Justice League of America [JLA; Superman [Clark Kent; Kal-El]; Flash [Barry Allen]; Batman [Bruce Wayne]; Atom [Ray Palmer]; Green Arrow [Oliver Queen]; Black Canary [Dinah Drake]; Green Lantern [Hal Jordan]; Snapper Carr] |
| Genre | Superhero |
| Pencils | Murphy Anderson |
| Inks | Murphy Anderson |
| Notes | Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (added by Gregory Fischer, June 2009). |
| Reprinted | in Justice League of America Archives, The (DC, 1992 series) #9 (November 2004) |
| Characters | Justice League of America [JLA; Atom [Ray Palmer]; Batman [Bruce Wayne]; Black Canary [Dinah Drake]; Flash [Barry Allen]; Green Arrow [Oliver Queen]; Green Lantern [Hal Jordan]; Snapper Carr; Superman [Clark Kent]]; Joker [Mr. Average; John Dough] (villain); Krypton ray gun |
| Synopsis | Snapper Carr betrays the League. |
| Genre | Superhero |
| Script | Denny O'Neil |
| Pencils | Dick Dillin |
| Inks | Joe Giella |
| Notes | Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (May 2007). |
| Reprinted | in Justice League of America Archives, The (DC, 1992 series) #9 (November 2004) |
| Genre | fact |