Or more precisely, 15 Times Superman and Lex Luthor Teamed Up. Including a Bizarro/Bizarro-Luthor team-up (art by John Forte all rights remain with current holder) from Adventure Comics #293.
By some arcane coincidence my column on Peter’s daughter May and the 15 Things You Don’t Know About Spider-Girl came out today too. Learn how she exists because the Clone Saga ended so badly, how her powers differ from Peter’s, and how Tom DeFalco saw the parent/child conflict as the heart of his series. Below (art by Pat McOliffe, all rights with current holder) a look at her debut in combat against the Green Goblin.