From publisher blurb:
Now you can bring the superheroes from the days of yore to your SUPERS! games. This edition of Public Domain supers includes 10 Supers! who rely on their brains and brawn to defeat evil.
Included in this set are:
Serpent Queen, Moon Girl, Mister Scarlet, Magno (Ace), Magno (Quality), Minute Man, Iron Lady, Panther Woman, Tomboy, and Phantom Lady