The Fundamentals: A Testimony To The Truth (generally referred to simply as The Fundamentals) is a set of ninety essays published between 1910 and 1915 by the Testimony Publishing Company of Chicago. According to its foreword, the publication was designed to be "a new statement of the fundamentals of Christianity." However, its contents reflect a concern with certain theological innovations related to liberal Christianity, especially biblical higher criticism. It is widely considered to be the foundation of modern Christian fundamentalism. The essays were written by sixty-four different authors, representing most of the major Protestant Christian denominations. It was mailed free of charge to ministers, missionaries, professors of theology, YMCA and YWCA secretaries, Sunday school superintendents, and other Protestant religious workers in the United States and other English-speaking countries. Over three million volumes (250,000 sets) were sent out. - Summary by Wikipedia Books in this series: The Fundamentals Volume 1 The Fundamentals Volume 2