Justice League of America #19 (1963)

In Justice League of America #19 (1963), the JLAers find themselves in a precarious situation as they are falsely accused of committing crimes by their evil doppelgangers. The imposters use their super powers to commit these heinous acts, and as a result, the JLA is forced to leave Earth. While in space, the JLA discovers that they all had dreams of super versions of themselves, which ultimately led them to devise a plan to confront their evil counterparts. The JLA is imprisoned and submerged deep inside the earth, but with their combined willpower, they are able to escape and ultimately triumph over their foes. This comic is a thrilling read that showcases the strength and resilience of the Justice League.