Mermaids 8 Unicorns 5 Children's stories, English 4 Lift-the-flap books 3 Vocabulary 3 Birds 2 Board books 2 Drum 2 Owls 2 Atlases 1 Bedtime 1 Children's questions and answers 1 Families 1 Fear of the dark 1 Flags 1 Food 1 Geometry 1 Hide-and-seek 1 Holocaust, Jewish (1939-1945) 1 Impersonation 1 Impostors and imposture 1 Jews 1 Mathematics 1 Monsters 1 Nature 1 Night 1 Plants 1 Sea monsters 1 Shapes 1 Space stations 1