Our leading postmodernist novelist turns his iconoclastic eye to a great American classic in this sequel to The Adventures of Huckleberry Finn.

At the end of Mark Twain's Huckleberry Finn, on the eve of the Civil War, Huck and Tom Sawyer decide to escape "sivilization" and "light out for the Territory." In Robert Coover's Huck Out West, also "wrote by Huck," the boys do just that, riding for the famous but short-lived Pony Express, then working as scouts for both sides in the war.

They are suddenly separated when Tom decides he'd rather own civilization than leave it, returning east with his new wife, Becky Thatcher, to learn the law from her father. Huck, abandoned and "dreadful lonely," hires himself out to "whosoever." He rides shotgun on coaches, wrangles horses on a Chisholm Trail cattle drive, joins a gang of bandits, guides wagon trains, gets dragged into U.S. Army massacres, suffers a series of romantic and barroom misadventures.

He is eventually...