Book excerpt: Traveled by mammoth-hunters and motorcyclists alike, the Minnesota River Valley shows the traces of a unique legacy: where else are you going to find a political party with ideals based on honest conversation and gymnastics? Not all of it is as lovely as the natural scenery it accompaniesMankato was the site of the largest mass execution in United States historybut its heritage demands contemplation. Discover the valleys most enterprising characters, from Fort Snelling bootleggers like Pierre Pigs Eye Parrant to the Granite Falls lawyer behind Prohibition, Andrew Volstead. With a guide like Johanneck, you might meet some familiar figures in surprising circumstances as she steals up behind Dr. Mayo at the grave he was robbing for medical research or catches FBI director J. Edgar Hoover in a moment of unguarded correspondence.