In an article on SLJ entitled, "Good & Plenty: It used to be hard to find good graphic novels for the K–4 crowd. My, how times have changed.", Peter Gutiérrez writes:
Just a couple of years ago, it was tough to find good graphic novels for the K–4 crowd. Sure, there were some standout selections, such as Andy Runton's Owly, Jimmy Gownley's Amelia Rules!, and Jennifer and Matt Holm's Babymouse, but they were lonely exceptions in a barren landscape. Things quickly changed when publishers realized that the same set that reads (and buys) picture books might also be drawn to graphic novels. Plus, what about the younger brothers and sisters of tween and teen manga readers or superhero fans? Weren't they also a potential new market for graphic novels?He goes on to give a nice round-up of recent offerings that stand on their own (eschewing series, largely) and have been mostly overlooked. Certainly, a good Fall/Winter graphic novel reading list.
These days, children's book and comics publishers offer tons of graphic novels for young readers. In fact, now there are probably too many choices, which, of course, is a nice problem to have.