Cover inks credit from Sinnott's personal records.
First credited colorist.
Marie Severin is credited for 'good works' on the splash page. Marie drew caricatures of Gerry Conway, Steve Englehart, Tom Fagan and Len and Glynis Wein throughout the story.
This is part of an unofficial Marvel-DC "crossover" set in the real-world Rutland, Vermont based Halloween parade run by Tom Fagan. It was orchestrated by three freelance writers; Steve Englehart (who scripted the Beast story in Amazing Adventures #16); Len Wein (author of Justice League of America #103) and Gerry Conway on Thor.