Mystery Puzzles and Logic Riddles: An Illustrated Collection of Deduction Games for Young Detectives (Logic Games for Smart Kids) Unicorn Books
Logic Grid Puzzles, Volume 2: From Easy to Fiendishly Hard (Logic Puzzles for Adults – Platinum Collection) Unicorn Books
Logic Grid Puzzles: An Illustrated Collection with Facts from the Real World (Logic Puzzle Books for Adults) Unicorn Books
Logic Grid Puzzles, Volume 4: 50 Fiendishly Hard Puzzles (Logic Puzzles for Adults – Platinum Collection) Unicorn Books