The 15 Puzzle book by Dic Sonneveld
English | June 1, 2006 | ISBN: 1890980153 | 144 Pages | DJVU | 6 MB
This book contains the definitive, illustrated history of one of the most popular and important mechanical puzzles of all time. It can be argued that the Fifteen Puzzle in 1880 had the greatest impact on American and European society during of any mechanical puzzle the world has ever known.