Graphic novels did not exist when I was a child. The closest thing to graphic novels we had were comic books. Graphic novels tell their stories mostly with art and text bubbles that contain narration and dialogue. Some of the old classics have been adapted to this form to attract younger or visual readers who don’t like books without pictures. Some history and biography books from educational publishers also take this form, even though they are not novels.
As I was looking through these shelves I also saw books that compiled collections of popular comic strips read mostly by adults.