Espionage -- United States -- History -- 20th century Intelligence service -- United States -- History -- 20th century 2 Spies -- United States -- Biography 2 Subversive activities -- United States -- History -- 20th century 2 Communism -- United States 1 Espionage -- United States -- Case studies 1 Espionage -- United States -- History -- 21st century 1 more ... Espionage, Soviet -- United States -- History 1 Keeney, Mary Jane, -- b. 1898 1 Keeney, Philip O. -- (Philip Olin), -- 1891-1962 1 Presidents -- United States -- History -- 20th century 1 Spies -- Communist countries -- Biography 1 Spies -- United States -- History 1 Spies -- United States -- History -- 20th century 1 United States -- Foreign relations -- 1945-1989 1 United States -- Foreign relations -- 1989- 1 United States. -- Central Intelligence Agency 1 World War, 1939-1945 -- Secret service -- United States 1 less ...