""The Northern Iron"" is a discourse delivered by Horace Bushnell at the North Church in Hartford on the Annual State Fast on April 14, 1854. The book discusses the concept of ""iron"" as it relates to the Northern states of the United States, particularly in the context of the ongoing debate over slavery. Bushnell argues that the Northern states are like iron in their strength and resilience, and that they must use this strength to fight against...