ACTION COMICS (1938) #521

“THE DEADLY RAMPAGE OF THE LADY FOX!” In New York City, the Vixen steals a van full of furs that belong to entrepreneur Mordecai Mule. Superman, attending a function at Madison Square Garden, learns of the robbery and leaps into action! Plus, “GROW, LITTLE GROWFISH!”  » The Deadly Rampage of the Lady Fox  » (Superman) written by Gerry Conway, penciled by Curt Swan, inked by Frank Chiaramonte, colored by Gene D’Angelo and lettered by John Costanza.  » Grow, Little Growfish!  » (Aquaman and the Atom) written by Bob Rozakis, penciled by Alex Saviuk, inked by Vince Colletta, colored by Jerry Serpe and lettered by John Costanza. Notes This issue contains the Hostess Superhero Ad, Plastic Man and Woozy Winks in  » Gold for Dessert  » . The first appearance of Vixen into the main DC Universe. Her first appearance was in Cancelled Comic Cavalcade #2 , which contained unpublished material due to the DC Implosion.