Bell is considered an expert on comics, and on the history of Canadian comics in particular. He has authored a number of books on the subject, starting with Canuck Comics in 1986, followed by Guardians of the North in 1992, on Canadian superheroes, and Invaders from the North in 2006.
In 1992, he curated the Guardians of the North: The National Superhero in Canadian Comic-Book Art exhibition, which was revised and expanded in 2001 into a Library and Archives Canada website. His comic book collection was donated in 1996 to the National Library of Canada's Rare Book Division, where it became known as the John Bell Canadian Comic Book Collection.[2]