Supergirl, Vol. 2 #6A

Battleground O'Hare / Head Over Heels in Trouble
"Battleground O'Hare": Matrix-Prime, a giant super-robot loaded with drone-robots inside its body, emerges from Lake Michigan, steals a large box from a hangar at O'Hare Airport, and battles Supergirl. The Girl of Steel allows the robot to escape, so that she may follow him to his home base in an air-filled dome on the bottom of the lake. "Head Over Heels in Trouble": Lois and Jimmy defeat Brainstorm's gang. Then Lois finds a baby on her doorstep, with a note saying she is the daughter of Lois's old roomie Kristin Cutler--who is found dead the next day.
Release Date: 1983