Action Comics (1938-) #252

Witness the origin and first appearance of Supergirl in 'The Supergirl from Krypton!' Kara Zor-El, Superman's long-lost cousin, arrives on Earth and adopts a secret identity to aid Superman in the ongoing fight for truth and justice!

Written By:
Henry Boltinoff, Robert Bernstein, Otto Binder
Pencils:
Henry Boltinoff, Al Plastino, Howard Sherman
Inks:
Henry Boltinoff, Al Plastino, Howard Sherman
Cover By:
Al Plastino, Curt Swan