Conrad Wright, who edited this book was a professor of American Church History at Harvard Divinity School. He and four others with similar backgrounds each contributed to this work. From the back cover of the book: "For some one hundred and fifty years, American Unitarians have applied their religious philosophy to the problems of their times. This unique group of people have been leaders in the cause of liberty and social reform. Now, five generations of Unitarian history comes together in this revealing study prepared for the 150th celebration of the founding of the American Unitarian Association." This second edition contains a new preface by Conrad Wright.

Conrad Wright, who edited this book was a professor of American Church History at Harvard Divinity School. He and four others with similar backgrounds each contributed to this work. From the back cover of the book: "For some one hundred and fifty years, American Unitarians have applied their religious philosophy to the problems of their times. This unique group of people have been leaders in the cause of liberty and social reform. Now, five generations of Unitarian history comes together in this revealing study prepared for the 150th celebration of the founding of the American Unitarian Association."