On April 14, 1865, the night of President Lincoln's assassination, Booth's conspirator Lewis Powell attempted to assassinate Secretary of State William Seward in his home just blocks from Ford's Theatre. The attack, which left Seward and his son seriously wounded, is recounted in poignant detail in Fanny Seward's diary. Fanny, the beloved only daughter of Seward, was a keen observer, and her diary entries from 1858 to 1866 are the foundation of...