Authors: Hagopian Institute
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Sudoku Junkie 404 Beginner Puzzles: Featuring Over 400 Sudoku Puzzles For Beginners Which Slowly Increase In Difficulty — Hagopian Institute
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Sudoku Junkie 202 Nearly Impossible Puzzles: Featuring 202 Nearly Impossible Puzzles That Will Challenge Your Mind For Hours — Hagopian Institute
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Quote Junkie Philosophy Edition: Over 1300 Quotes From Great Philosophers And Others Who Have Had Philisophical Moments Of Wisdom — Hagopian Institute
