Synopsis: For 100,000 years, a space-probe circled the galaxy, transforming it into the mightiest weapon of all time! Now it was about to land on Earth - where the only way war-mongering aliens could recover it was by luring the Justice Leaguers into a deathtrap in ... the Cosmic Fun-House!
Notes: Originally published in Justice League of America #7 (October-November, 1961)
Synopsis: In a flash of incredible light, Earth's greatest heroes were hurled through space-and-time to worlds of doom where their super-powers became their super-weaknesses! Was this indeed fated to be ... the last case of the Justice League?
Notes: Originally published in Justice League of America #12 (June, 1962)