Incoming Resources
- Grant's secret service, the intelligence war from Belmont to Appomattox, William B. Feis
- Miss Lizzie's war, the double life of southern belle spy Elizabeth Van Lew, Rosemary Agonito
- Code breakers and spies of the Civil War, Andrew Coddington
- Liar, temptress, soldier, spy, four women undercover in the Civil War, Karen Abbott
- Lincoln's spies, their secret war to save a nation, Douglas Waller
- Liar, temptress, soldier, spy, four women undercover in the civil war, Karen Abbott
- Behind rebel lines, the incredible story of Emma Edmonds, Civil War spy, Seymour Reit
- The war between the spies, a history of espionage during the American Civil War, Alan Axelrod
- Liar, temptress, soldier, spy, four women undercover in the Civil War, Karen Abbott
- The man who tried to burn New York, Nat Brandt