Foy, Michael. Michael Collins's intelligence war : the struggle between the British and the IRA, 1919-1921 / Michael T. Foy. - Thrupp, Stroud : Sutton Pub., 2006. - 281 p., [16] p. of plates : ill., maps, ports. ; 24 cm. Includes bibliographical references and index. ISBN: 0750942673 : (hbk.) £20 Subjects--Personal Names: Collins, Michael, 1890-1922. Subjects--Corporate Names: Irish Republican Army--History--20th century. Subjects--Topical Terms: Intelligence service--History--Ireland--20th century.Espionage, British--History--Ireland--20th century. Subjects--Geographic Terms: Ireland--History--Military intelligence.--War of Independence, 1919-1921 Dewey Class. No.: 941.50821