I've managed to finished reading other of Lewis' works, but never the Chronicles....now, if I can just remember which box they're in.....
Okers.
You'll find them eventually.
Probably go, "Hey, Sharks and Darks mentioned these.."
When you get to the part where one dwarf threatens to have himself and the rest of the dwarves sit on an unruly dwarfs head until he behaves...