April '65 : Confederate covert action in the American Civil War

Tidwell, William A.
Kent, Ohio : Kent State University Press, [1995]

Grant's secret service : the intelligence war from Belmont to Appomattox

Feis, William B., 1963-
Lincoln, Neb. : University of Nebraska Press, 2002.

Intelligence in the American Civil War

Allen, Thomas, 1964-
New York : Nova Science Publishers, [2010]

The mysterious Private Thompson : the double life of Sarah Emma Edmonds, Civil War soldier

Gansler, Laura Leedy, 1958-
Lincoln : University of Nebraska Press, 2007.

Secret missions of the Civil War : first-hand accounts by men and women who risked their lives in un

Stern, Philip Van Doren, 1900-1984.
New York : Bonanza, [1959]

The secret service of the Confederate States in Europe; or, How the Confederate cruisers were equipp

Bulloch, James Dunwody, 1823-1901.
New York : T. Yoseloff, [1959]

She went to the field : women soldiers of the Civil War

Tsui, Bonnie.
Guilford, Conn. : TwoDot, [2003]
1st ed.

Southern lady, Yankee spy : the true story of Elizabeth Van Lew, a Union agent in the heart of the C

Varon, Elizabeth R., 1963-
New York : Oxford University Press, 2003.

Southern lady, Yankee spy : the true story of Elizabeth Van Lew, a Union agent in the heart of the C

Varon, Elizabeth R., 1963-
Oxford : Oxford University Press, 2003.

Spencer Kellogg Brown, his life in Kansas and his death as a spy, 1842-1863 : as disclosed in his di

Brown, Spencer Kellogg, 1842-1863.
New York : D. Appleton, 1903.

Spies for the Blue and Gray.

Kane, Harnett T. (Harnett Thomas), 1910-1984.
Garden City, N.Y. : Hanover House, [1954]
[1st ed.]

Spies, scouts, and secrets in the Gettysburg campaign : how the critical role of intelligence impact

Ryan, Thomas J., 1934- author.
El Dorado Hills, CA : Savas Beatie, 2015.
First edition.

The spy of the rebellion : being a true history of the spy system of the United States Army during t

Pinkerton, Allan, 1819-1884.
Hartford, Conn. : Winter & Hatch, 1885.

Spying in America : espionage from the Revolutionary War to the dawn of the Cold War

Sulick, Michael J.
Washington, DC : Georgetown University Press, [2012]

Surveillance and spies in the Civil War : exposing Confederate conspiracies in America's heartland

Towne, Stephen E., 1961- author.
Athens : Ohio University Press, [2015]

Wild Rose : Rose O'Neale Greenhow, Civil War spy

Blackman, Ann.
New York : Random House, [2005]
1st ed.