In 1905, Westminster Press published History of the Presbyterian Churches of the World by church historian Richard Clark Reed (1851–1925). Reed’s book, intended as a textbook for college and seminary students, covered the history of churches that subscribed to Presbyterian polity from the New Testament era to the beginning of the twentieth century. Based on Reed’s original work as well as an unpublished manuscript by Presbyterian historian Thomas Hugh Spence Jr. (1899–1986), Presbyterian and Reformed Churches: A Global History picks up the story of Presbyterian and Reformed churches where the earlier works left off. In this volume, James McGoldrick revises and updates Reed’s and Spence’s original, historically relevant works, continuing the survey to the twenty-first century.