Title: Child's Book of Animals, Author: Robert Allen
Title: Mind-Melting Conundrums (Train Your Brain Puzzle Series), Author: Robert Allen
Title: Super Tricky Teasers: Expert (Train Your Brain Puzzle Series), Author: Robert Allen
Title: Brain-Scrambling Challenges (Train Your Brain Puzzle Series), Author: Robert Allen
Title: Mensa Presents Mind Mazes for Kids, Author: Robert Allen
Title: Brain-Bending Challenges: Intermediate (Train Your Brain Puzzle Series), Author: Robert Allen
Title: 123: First Counting Book, Author: Robert Allen
Title: Mensa Presents Secret Codes, Author: Robert Allen
Title: Mind-Twisting Puzzles: Beginner (Train Your Brain Puzzle Series), Author: Robert Allen