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 9 Supers! both heroes and villains.
Included in this set are:
Baron Doom, Beast, Crimson Cobra, Funnibone, Bird Man, Scarlet Skull, The Thinker, Brick Bat, and Crimson Claw