Cover pencils by Carmine Infantino, inks by Murphy Anderson. The Negative Crisis on Earths One-Two!, script by Gardner Fox, pencils by Mike Sekowsky, inks by Sid Greene; The JLA and JSA team up to stop the Black-Sphered Villains on Earth-2, using artificial means to power up four of their own with black matter, but it almost backfires when the four heroes become evil; The remaining heroes are then subconsciously helped by the four heroes into defeating them by exposing their weaknesses; These same weaknesses are then used vs. the four earlier-charged normal persons, who then lose their powers as well; Things are returned to normal on Earth-2, and the four Leaguers return to their world to stop the charged persons there using the same weaknesses; 1st Golden Age Wonder Woman in the Silver Age. 36 pgs. $0.12. Cover price $0.12. Grade: CGC 6.0 explanation of grade Condition: Used (collectible)