Script:	Gardner Fox (credited)
Pencils:	Mike Sekowsky (credited)
Inks:	Sid Greene (credited)
Colors:	?
Letters:	Gaspar Saladino

• Genre:superhero

• Feature Logo:Justice League of America
• First Line of Dialogue or Text:On Earth-Two, mysterious black spheres have been absorbed into the bodies of How Chu, a Chinese bandit --
Universe:DC : Earth-Two (Pre-Crisis)

Justice League of America (DC : mainstream)

• The Flash [Barry Allen]

  (mainstream)
• Green Arrow [Oliver Queen]

  (mainstream)
• Green Lantern [Hal Jordan]

  (mainstream)
• Superman [Clark Kent]

  (mainstream)

Justice Society of America

• Hawkman [Carter Hall]
• Hourman [Rex Tyler]
• Mr. Terrific [Terry Sloane]
• Robin [Dick Grayson]
• Johnny Thunder
• Thunderbolt
• Wildcat [Ted Grant]
• Wonder Woman [Princess Diana]

• How Chu

  (villain)
• Gem Girl [Claire Morton]

  (villain)
• Money Master [Horace Rowland]

  (villain)
• Smashing Sportsman [Marty Baxter]

  (villain)

Synopsis:

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 weaknessses. 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.

Reprints (6)

• in Justice League of America Archives (DC, 1992 series) #7 ([April] 2001)
• in Crisis on Multiple Earths (DC, 2002 series) #2 ([December] 2003)
• in Showcase Presents: Justice League of America (DC, 2005 series) #3 (2007 [February 2008])
• in Justice League of America: The Silver Age Omnibus (DC, 2016 series) #2 ([August] 2016)
• in Crisis on Multiple Earths (DC, 2021 series) #1 - Crossing Over (2020 [April 2021])
• in DC Finest: Justice League of America: The Bridge Between Earths (DC, 2024 series) (2024 [January 2025])

Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.

Story across 23 pages, but pages 12 and 23 are half-pages.

JLA-JSA team-up. Story concluded from previous issue.

Script:	Julius Schwartz
Letters:	typeset

• Feature Logo:The JLA Mail Room

letters submitted by Leonard Rosenberg; Ken Lucas; Richard H. Volbrecht Jr.

Script:	Henry Boltinoff (signed as Henry Boltinoff)
Pencils:	Henry Boltinoff (signed as Henry Boltinoff)
Inks:	Henry Boltinoff (signed as Henry Boltinoff)
Colors:	?
Letters:	Henry Boltinoff (signed as Henry Boltinoff)

• Genre:non-fiction
• Job Number:6553

• Feature Logo:Cap's Hobby Hints
• First Line of Dialogue or Text:Dad, can I have this old rubber stamp?

hint submitted by Mike Grazier of San Marcos, Texas