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来源: history.state.gov (Office of the Historian, U.S. Department of State), www.archives.gov (National Archives and Records Administration), www.trumanlibrary.gov (Harry S. Truman Presidential Library), www.eisenhowerlibrary.gov (Dwight D. Eisenhower Presidential Library), www.jfklibrary.org (John F. Kennedy Presidential Library), www.lbjlibrary.org (Lyndon Baines Johnson Presidential Library), www.nixonlibrary.gov (Richard Nixon Presidential Library), www.loc.gov (Library of Congress), www.ushmm.org (United States Holocaust Memorial Museum, Cold War context), www.wilsoncenter.org (Wilson Center Cold War International History Project), millercenter.org (Miller Center, University of Virginia, Presidential Recordings), www.atomicheritage.org (Atomic Heritage Foundation), www.gwu.edu/~nsarchiv (National Security Archive, George Washington University), www.pbs.org/wgbh/americanexperience (American Experience documentary series)