Between the Lines: Secret Service Stories Told Fifty Years After

"Between the Lines: Secret Service Stories Told Fifty Years After" is a book written by Bvt. Major H.B. Smith, the Chief of Detectives and Assistant Provost Marshal General during the Civil War. This book is a collection of his personal experiences as a secret service agent, including detective work, tracking down Confederate spies, and capturing blockade runners. The stories take place in New York Harbor, Fort McHenry, Harper's Ferry, and more, providing a unique insight into the workings of the secret service during the Civil War.