Martin Gardner was an American mathematics and science writer specializing in recreational mathematics, but with interests encompassing micromagic, stage magic, literature (especially the writings of Lewis Carroll), philosophy, scientific skepticism, and religion. He wrote the Mathematical Games column in Scientific American from 1956 to 1981, and published over 70 books.
This is another one of Martin Gardner's collections of columns about mathematical recreations: it's very entertaining material, and Gardner explains the mathematical concepts very well. Best of all, if you find yourself less interested in the topic of one column, you can skip to the next one without any worries (with only a couple of exceptions, the columns are entirely independent of each other)