#HappyBirthday #ENelsonBridwell #MadMagazine #comicWriter #editor & original #continuityCop @DCOfficial key to #production of #reprintVolumes #digests & #giantSizeComics co-conceived the #origin of #TheLegionOfSuperHeroes #TheInferiorFive #TheSecretSix #Fire #Ice wrote #SuperFriends