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Martin Gardner Puzzle Books
By an Amazon.com customer
The Colossal Book of Mathematics: Classic Puzzles, Paradoxes, and ProblemsThe Colossal Book of Mathematics: Classic Puzzles, Paradoxes, and Problems by Martin Gardner
Buy new: $18.82 / Used from: $10.20
Though many people might disagree, I think this is MG's most definitive work to date.
My Best Mathematical and Logic Puzzles (Math & Logic Puzzles)My Best Mathematical and Logic Puzzles (Math & Logic Puzzles) by Martin Gardner
Buy new: $4.95 / Used from: $1.92
You can't go wrong with a cheap Dover.
Perplexing Puzzles and Tantalizing Teasers (Math & Logic Puzzles)Perplexing Puzzles and Tantalizing Teasers (Math & Logic Puzzles) by Martin Gardner
Buy new: $7.95 / Used from: $1.16
Entertaining Mathematical PuzzlesEntertaining Mathematical Puzzles by Martin Gardner
Buy new: $5.95 / Used from: $1.77
New Mathematical Diversions: More Puzzles, Problems, Games, and Other Mathematical Diversions (Spectrum Series)New Mathematical Diversions: More Puzzles, Problems, Games, and Other Mathematical Diversions (Spectrum Series) by Martin Gardner
Buy new: $22.95 / Used from: $7.42
More Mathematical Puzzles of Sam LoydMore Mathematical Puzzles of Sam Loyd
Buy used from: $0.01
Sam Loyd is Mr. Puzzle of the 19th century
Classic BrainteasersClassic Brainteasers by Martin Gardner
Buy new: $6.95 / Used from: $0.01
The Second Scientific American Book of Mathematical Puzzles and DiversionsThe Second Scientific American Book of Mathematical Puzzles and Diversions by Martin Gardner
Buy used from: $5.56
I think there are 15 or so books in this series.
Hexaflexagons and Other Mathematical Diversions: The First Scientific American Book of Puzzles and GamesHexaflexagons and Other Mathematical Diversions: The First Scientific American Book of Puzzles and Games by Martin Gardner
Buy used from: $4.44
Aha! InsightAha! Insight by Martin Gardner
Buy used from: $11.53
Mathematical Puzzles of Sam LoydMathematical Puzzles of Sam Loyd by Sam Loyd
Buy new: $8.95 / Used from: $1.60
Mind-Boggling Word PuzzlesMind-Boggling Word Puzzles by Martin Gardner
Buy used from: $0.30
Word puzzles too !
Wordplay: Ambigrams and Reflections on the Art of AmbigramsWordplay: Ambigrams and Reflections on the Art of Ambigrams by John Langdon
Buy used from: $2.15