Amiable Scoundrel is the first biography in fifty years of Simon Cameron, Lincoln’s first Secretary of War. From abject poverty to undisputed political boss of Pennsylvania, Lincoln’s secretary of war, senator, chair of the Senate Foreign Relations Committee, and a founder of the Republican Party, Simon Cameron (1799–1889) was one of the nineteenth century’s most prominent political figures. In his wake, however, he left a series of questionable political and business dealings and, at the age of eighty, even a sex scandal. Amiable Scoundrel puts Cameron’s actions into a larger historical context by demonstrating that many politicians of the time, including Abraham Lincoln, used similar tactics to win elections and advance their careers. This study is the fascinating story of Cameron’s life and an illuminating portrait of his times.