Markle, Donald E. <br/><br/>
Spies and spymasters of the Civil War / 
Donald E. Markle. 
 - New York :  Hippocrene Books,  c1994. 
 - xix, 244 p. ;  24 cm. 
<br/><br/>Includes bibliographical references (p. 227-234) and index. 
<br/><br/><label>ISBN: </label>078180227X 
<br/><br/><label>LCCN: </label>93036068 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Spies--History--United States--19th century.<br/>Spies--Biography.--United States<br/>Intelligence service--History--United States--19th century.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--History--Secret service.--Civil War, 1861-1865
<br/><br/><label>LC Class. No.: </label>E608  / .M345 1994 
<br/><br/><label>Dewey Class. No.: </label>973.7/85