DC · January, 1966
1st Appearance of Nypto (Krypto’s grandfather); 1st Appearance of Vypto (Krypto’s great-grandfather); 1st Appearance of Zypto (Krypto’s father); Origin of Krypto
The Wild Teen-Agers!; Krypto’s Family Tree!; cartoon: Little Pete
Writers: Otto Binder, Henry Boltinoff
Artists: George Papp, Curt Swan, Henry Boltinoff