"How to Stamp out a Superboy"
Three prisoners from the Phantom Zone have found a way to exert their mental powers outside the Zone. Their goal has been reached, they have caused Ma and Pa Kent to forget that their son Clark Kent and Superboy are the same person.
"Superboy's Secret Diary, The Day of the Lost Clothing"
When Clark has to quickly change to Superboy to foil crimminals, he leaves behind tell-tale clothing that may reveal his secret identity.