Value, Beauty, and Nature: The Philosophy of Organism and the Metaphysical Foundations of Environmental Ethics - Brian G. Henning

Totally Awesome Mazes and Puzzles: Over 200 Brain-Bending Challenges - William C. Potter

Value, Beauty, and Nature: The Philosophy of Organism and the Metaphysical Foundations of Environmental Ethics - Brian G. Henning

Brain-Bending Animal Puzzles for Kids: A Treasury of Fabulous Facts, Secret Codes, Games, Mazes, and More! - Vicki Whiting

Kindergarten Activity Book: Awesome Kids Activity Workbook for kids ages 5 to 6 with Brain-Bending Challenges Kindergarten Workbook with Early Rea - Elena Frost

Challenging mazes for kids ages 4-8: Maze Activity Book 4-6, 6-8 - Brain bending puzzles, Paperback/Penciol Press