On November 20, 1903, Tom Horn was hanged in Cheyenne, Wyoming, for the murder of a fourteen-year-old nester boy. Horn-army scout and interpreter for Generals Willcox, Crook, and Miles in the Apache wars, Pinkerton operative, cattle detective, and "King of Cowboys"-was hanged like a common criminal, many think mistakenly. His own account of his life, written while he was in prison and first published in 1904, is not really a vindication,...