First edition

I started playing back when Champions 3 first came out.  I loved the comic books of the 70s and 80s and Champions made it possible for me to play my favorite characters.

I actually chose an original character named Rocky (yes, rock powers)  it was  great fun.  

Now I get a chance to look over some of those early supplements.  

I have 

The island of Dr. Destroyer

Escape from Stronghold

Circle and Mete

The Blood and Dr. McQuark

Deathstroke

Enemies 

(Note:  some may be 2nd edition)

I have read (a long time ago)

The great super villain contest

Corolus effect 

Back then, they didn't have a whole bunch of information on  running those games, but have added quite a bit to the books since then.