In 1773, John Frederick Whitehead and Johann Carl Buttner, two adolescent Germans, were placed on board the same ship headed to colonial America. With few options in Germany, each had been recruited by the labor contractors known popularly as soulsellers--men who traded in human cargo. On arrival in America they were sold to different masters, and, years later, each wrote a memoir of his experiences. These two autobiographies are valuable historical records of immigrant attitudes, perceptions, and goals. Despite their shared voyage to America and similar condition as servants, their...