In his now classic “The Significance of the Frontier in American History” read before the American Historical Association in 1893 Frederick Jackson Turner quoted from A New Guide for Emigrants to the West (second edition; Boston, 1837), written by the pioneer Baptist missionary and founder of seminaries, John Mason Peck, who died just a century ago. Peck had distinguished three types of Westerners: the pioneers, the settlers, and “the men of capital and enterprise.” Turner found this typology useful and adapted it in his succession of studies that have helped to shape our understanding of American history.