Every American has heard of the lumberjack hero Paul Bunyan and his big blue ox. For 100 years his exploits filled cartoons, magazines, short stories, and children's books, and his name advertised everything from pancake breakfasts to construction supplies. By 1950 Bunyan was a ubiquitous icon of America's strength and ingenuity. Until now, no one knew where he came from--and the extent to which this mythical hero is rooted in Wisconsin.