Salmon P. Chase is usually remembered for his service as Treasury secretary during the Civil War. Earlier, he had attracted national attention as an antislavery attorney and politician and was twice elected U.S. senator from Ohio and served two terms as governor. For the final volume of this series, John Niven has chosen 215 significant letters that shed light on the last phase of Chase's life, the eight and one half years that he presided over the United States Supreme Court as chief justice.

During this period, Chase and the Court grappled with an array of issues that redefined...