18 books • 5 series
Book #1: Billy Go to Bed
Book #6: Billy's Halloween
Book #7: Billy's Fireworks Night
Book #9: Billy's Day Out In London
Book #10: Billy's Easter Egg Hunt
Book #2: Percy Police Car
Book #1: Ruby Won't Use Her Potty
Book #4: Ruby No More Binky
Book #5: Ruby Plays Dress Up
Book #2: Two Different- Making Sandcastles
Book #4: Two Different Bathtime Fun
Book #1: Black is You
Book #2: Black is Me
Book #3: Butterflies Adventure