80 Page Giant Magazine #10

In "The Journey of the Second Superboy!", Superboy and his loyal dog Krypto face a chilling threat when the Kryptonite Kid and his canine accomplice turn everyday objects into deadly Kryptonite, forcing the duo to confront their limits. With their strength fading and no escape in sight, a surprise intervention from the mischievous Mxyzptlk pulls the villains into the 5th dimension, leaving Superboy and Krypto to survive the ordeal. Written by Jerry Siegel and brought to life with dynamic art by George Papp, this 1965 DC adventure features a standout cover by Curt Swan and George Klein.