The Flash knows how to pole-vault!
The story: "Secret of the Sinister Sorcerers!" by Gardner Fox, Mike Sekowsky, and Bernard Sachs. All the man-made objects in the world stop working, thanks to the machinations of some evil wizards from an alternate world known as "Magic Land."
The JLA tries to reverse the spell on their own, but that doesn't work, so they call in no less than Merlin(!) to help out. Good to have connections.
Roll Call: Superman, Batman, Wonder Woman, Aquaman, Flash, Green Lantern, Martian Manhunter
Notable Moments: Wonder Woman battles, as she calls them, "Troll dwarfs with tommy guns!" It takes a lot to faze an Amazon princess.
Superman and Batman also participate in the "get that hand back behind that door" scene depicted on the cover. But since its magic Superman isn't much help, and Batman isn't much help because he's just a regular guy in a bat costume.