The "tape-measure home run" is the greatest single act of power in the game of baseball, and the tales of these homers are the most cherished legacies players and fans hand down through the generations. Each long-distance shot has become fable; they are baseball's versions of the feats of Paul Bunyon, Hercules, and Samson. No one but Bill Jenkinson could separate myth from fact and actually study, rank, and describe in riveting detail...