 Mathematical Carnival by Martin Gardner |  The Second Scientific American Book of Mathematical Puzzles and Diversions by Martin Gardner |  The Moscow Puzzles by Boris A. Kordemsky |  Riddles in Mathematics by Eugene P. Northrop |  Amusements in Mathematics by Henry Ernest Dudeney |  The Colossal Book of Mathematics by Martin Gardner |  Penrose Tiles to Trapdoor Ciphers by Martin Gardner |  Mathematics, Magic and Mystery by Martin Gardner |  An Introduction to Mathematics by Alfred North Whitehead |  Game, Set and Math by Ian Stewart |  How to Cut a Cake by Ian Stewart |  The Mathematical Universe by William Dunham |  The Unexpected Hanging and Other Mathematical Diversions by Martin Gardner |  The Colossal Book of Short Puzzles and Problems by Martin Gardner |  Mathematical Magic Show by Martin Gardner |