World's Finest Comics #177

World's Finest Comics #177 (On Sale: June 13, 1968) has a cover by Ross Andru and Mike Esposito.

"Duel of the Crime Kings" is by Jim Shooter, Curt Swan and Mike Esposito. The Joker breaks Lex Luthor out of Gotham prison and Luthor takes the Joker to a hidden cache of loot and weapons. Superman and Batman have followed the crooks, but they are unable to capture them. Luthor then uses a time machine to transport three historical figures from the past into the present to help commit crimes. He summons Benedict Arnold, Baron Von Munchhausen, and Leonardo Da Vinci.

Leonardo helps Luthor build weapons, while Von Munchhausen's lies inspire the Joker to plan crimes. Benedict Arnold serves as a field general for the crooks during their crimes, but he secretly sets Luthor and the Joker against one another.

The back-up story is "Dead Silence" drawn by Nick Cardy and reprinted from Gang Busters #67.

Edited by Mort Weisinger.