Action Comics #279: "Supergirl's Secret Enemy!"

Download Action Comics #279

Script: Jerry Siegel

Pencils and inks: Jim Mooney

Characters: Supergirl; Lesla-Lar (villain); Fortress of Solitude; Kandor; Lori Lemaris (picture); Ronal (picture); Superman; Fred Danvers (intro); Mrs. Danvers (intro); Streaky; Jor-El (statue); Brainiac (picture); The Phantom Zone; Lex Luthor

Reprinted:

• in Action Comics (DC, 1938 series) #360 (March 1968)
• in Supergirl Archives (DC, 2001 series) #2
• in Showcase Presents: Supergirl (DC, 2007 series) #1