The first general survey of relations between Protestants and Catholics in America during the past half century will be welcomed not only by social historians but by clergymen and laymen interested in the development of constructive interfaith relations.

Lerond Curry has traced the major trends in this fifty-year period and analyzed the underlying factors that influenced them. Much of his account is based on correspondence and personal interviews with people who took part in the events and movements he describes.

The rapid growth of Catholic population just before World War I,...