The 15 puzzle : how it drove the world crazy ; the puzzle that started the craze of 1880 ; how America's greatest puzzle designer, Sam Loyd, fooled everyone for 115 years /
Slocum, Jerry.
Sonneveld, Dic.
Beverly Hills, CA : Slocum Puzzle Foundation,
2006.
"June 2006."
Includes bibliographical references (p. 137-142) and index.
Loyd, Sam.
Puzzles
Puzzles
Board games
Puzzels.