DC · April, 1968
Reprints edited versions of Action Comics #278 (Jul 1961), #279 (Aug 1961), #280 (Sep 1961), #281 (Oct 1961), 3282 (Nov 1961), #283 (Dec 1961), #284 (Jan 1962), and #285 (Feb 1962); 80-Page Giant; G-45; Mar-Apr issue
The Unknown Supergirl!; Supergirl’s Secret Enemy!; Milestones in Supergirl’s Life (text); The Three Red K Perils!; The Super-Mermaid!; The World’s Greatest Heroine!; The Infinite Monster!
Writer: Jerry Siegel
Artist: Jim Mooney