Letters on the Divine Trinity: Addressed to Henry Ward Beecher is a book written by Benjamin Franklin Barrett and published in 1860. The book is a series of letters written to Henry Ward Beecher, a prominent American Congregationalist clergyman, on the topic of the Christian doctrine of the Trinity. The letters are written in a conversational style, and Barrett uses them to explore the history and theology of the Trinity, as well as to address some...