 Game, Set and Math by Ian Stewart |  The Unexpected Hanging and Other Mathematical Diversions by Martin Gardner |  The Second Scientific American Book of Mathematical Puzzles and Diversions by Martin Gardner |  The Ambidextrous Universe by Martin Gardner |  Did Adam and Eve have navels? by Martin Gardner |  Riddles in Mathematics by Eugene P. Northrop |  Mathematics by Keith Devlin |  Anno's Math Games by Mitsumasa Anno |  The Adventures of Penrose the Mathematical Cat by Theoni Pappas |  A Course of Pure Mathematics by G. H. Hardy |  Meta Math! by Gregory Chaitin |  Mathematics and the Search for Knowledge by Morris Kline |  Stalking the Riemann Hypothesis by Dan Rockmore |  Wonders of Numbers by Clifford A. Pickover |  Dr. Euler's Fabulous Formula by Paul J. Nahin |  Further Adventures of Penrose the Mathematical Cat by Theoni Pappas |  The Joy of Mathematics by Theoni Pappas |  The Book of Numbers by John H. Conway |  Surreal Numbers by Donald E. Knuth |  Astrophysics for People in a Hurry by Neil deGrasse Tyson |