80-page Giant G-57. Cover pencils by Curt Swan, inks by Neal Adams. "The Battle of the Super-Pets!", script by Jerry Siegel, art by Jim Mooney; Supergirl devises a series of contests between Streaky and Krypto. Zeroids toy ad. "The Bride of Mr. Mxyzptlk!", script by Jerry Siegel, art by Jim Mooney; Mr. Mxyzptlk decides to pester Supergirl while Superman is away from Earth, so he first changes many people into Bizarros and then restores Supergirl's Kryptonian parents to life. "Supergirl's Farewell to Earth," script by Otto Binder, art by Jim Mooney; Superman punishes Supergirl for revealing her existence to Krypto. "The War Between Supergirl and the Supermen Emergency Squad!", script by Robert Bernstein, pencils by Wayne Boring, inks by Stan Kaye. "Supergirl's Greatest Challenge!", script by Jerry Siegel, art by Jim Mooney. 68 Pages, Full Color. Cover price $0.25.