Supergirl starring in... Adventure Comics #385 (October 1969) by DC Comics
Cover pencils by Curt Swan, inks by Murphy Anderson. Supergirl's Big Sister, script by Robert Kanigher, art by Kurt Schaffenberger; a super strong girl appears on earth, claiming to be Supergirls older sister. The Jilting of Supergirl, script by Robert Kanigher, art by Win Mortimer. Tricksy humor half-page by Henry Boltinoff. Neal Pozner mention on letters page.