Secret Origins — DC Comics, National Periodical Publications
Issue: #2
The second issue of Secret Origins features the first appearances of Supergirl, Green Lantern and the Atom.For many years Superman thought he was the only survivor of his native planet Krypton. Then one day that assertion is shattered when another spaceship shatters on the Earth and out pops a teenage girl wearing a similar outfit to his own! Welcome to Earth, Superman's cousin Kara, who was also...
Creators: Joe Giella, Nick Cardy
Characters: Superman, Hal Jordan, Supergirl, Supergirl, Ray Palmer, Abin Sur