This book presents the theological thought of Bishop Casimir F. Durand, who has served as priest under Bishop Rene Vilatte and succeeded him as Ordinary of the Christian (Old) Catholic Church. He also knew Bishops Frederick Lloyd and Daniel Hinton when they were leaders of the American Catholic Church (A.C.C.) communion and became President after them. His testimony is helpful to understand the characteristics of North American Old Catholicism and its evolution towards Episcopal /Independent/Community Churches inspired by Gallican ecclesiology and Anglican piety. A biographical sketch precedes the texts, and at the end of the book is an Appendix containing original documents of interest, such as the Catechism compiled by Bishop Lloyd in 1915 and the Official Statement on the A.C.C. made by Bishop Hinton in 1936.