On-sale date from Comic Reader #127.
Per Keith Giffen's interview in Alter Ego #14: "I was just the layout artist. I can make a claim to some design work, the pacing of the story, and the layout of the panels. But I was just the storyboard guy. And then Woody would come along with his people and he would work his magic over the top of it." Uncredited Sirois background inks per Wallace Wood checklist.
Story continues in next issue.
Letters from Kevin L. Callahan; Ed Via; Al Schroeder III; Mark Zutkoff; Kenneth Kemble; Bob Rodi. Explains that Power Girl is the artistic creation of Joe Orlando.