I was a bit leery of talking about the Man of Steel because so much has been written about Kal-El and there are so many experts on him here. But SUPERBOY? Except for his Legion appearances, very little of the Boy of Steel has been reprinted in the last thirty or so years so, perhaps, I can come up with some decent queries. When did Superboy (of Earth-One) know that he was from Krypton? I know th…