Tape on cover
Published Feb 1960 by DC.
Cover pencils by Curt Swan, inks by Stan Kaye. "Superman's Fortresses of Solitude!", script by Jerry Siegel, pencils by Wayne Boring, inks by Stan Kaye; Superman brings his Fortress to Metropolis so people can visit, and the Anti-Superman gang seizes upon this chance to plant a bomb in it. "Congorilla's Last Stand," script by Robert Bernstein, art by Howard Sherman; Congo Bill is asked to the dedication of an electrical power dam, where an attempt is made on his life. 2/3-page Ollie story by Henry Boltinoff. Origin and 1st appearance of Streaky the Super Cat and 1st X-Kryptonite in "Supergirl's Super Pet!", script by Jerry Siegel, art by Jim Mooney; Supergirl recovers a small Kryptonite meteor and unsuccessfully tries to find a chemical way to render it harmless; Later, Linda saves a stray orange cat from a dog.