Western Rivermen, the first documented sociocultural history of its subject, is a fascinating book. Michael Allen explores the rigorous lives of professional boatmen who plied non-steam vessels—flatboats, keelboats, and rafts—on the Ohio and lower Mississippi rivers from 1763-1861. Allen first considers the mythical “half horse, half alligator” boatmen who were an integral part of the folklore of the time. Americans of the Jacksonian and pre-Civil War period perceived the rivermen as hard-drinking, straight-shooting adventurers on the frontier. Their notions were reinforced by romanticized portrayals of the boatmen in songs, paintings, newspaper humor, and literature. Allen contends that these mythical depictions of the boatmen were a refle...