Lincoln's Secret Spy: The Civil War Case That Changed the Future of Espionage

A month after Lincoln’s assassination, William Alvin Lloyd arrived in Washington, DC, to press a claim against the federal government for money due him for serving as the president’s spy in the Confederacy. Lloyd claimed that Lincoln personally had issued papers of transit for him to cross into the South, a salary of $200 a month, and a secret commission as Lincoln’s own top-secret spy. The claim convinced Secretary of War Edwin Stanton and Judge Advocate General Joseph Holt—but was it true...