One of the most talented and influential American politicians of the nineteenth century, William Pitt Fessenden (1806--1869) helped devise Union grand strategy during the Civil War. A native of Maine and son of a fiery New England abolitionist, he served in the United States Senate as a member of the Whig Party during the Kansas-Nebraska crisis and played a formative role in the development of the Republican Party. In this richly textured and fast-paced...