By SARA GIBONEY UNK Communications Seventy-two long cardboard storage boxes contain the fantastical narratives of superheroes, spies and other fictional characters. David Palmer’s collection of comic books has grown to 20,000 in the 50 years that he’s been reading and collecting. Palmer’s love for comic books began as a child. He remembers being captivated by Captain America, Thor, Iron Man and the Wasp as he read the Avengers in the early 1960s. “Comic books … [Read more...] about Superheroes Collide: Palmer examines comic book industry from business perspective