The book "History of the Missions of the American Board of Commissioners for Foreign Missions to the Oriental Churches, Volume II" is written by the author Rufus Anderson. This book examines the religious missions that were sent to the Eastern churches by American missionaries in the 19th century. The author examines the history of the spread of Christianity in various countries of the East, noting the contribution of missionaries to the development of church life and culture in these regions. The book is an important source for understanding the interaction of different religious communities and intercultural exchange in the past.