Library of Congress call numbers group items by subject, but there is no single call number range for all materials in history. The following letters represent some of the major subject and sub categories for information on the history of Cold War era in the United States:
Class E: History of America
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- E 806-812..........Franklin D. Roosevelt's administrations,1933-April 12, 1945
- 813-816..........Truman's administrations, April 12, 1945-1953
- 835-837.7........Eisenhower's administrations, 1953-1961
838-889..........Later twentieth century, 1961-
- 838-840.8..........General
- 838.3..........Sources and documents
- 839.5-839.8..........Political history
- 839.8..........Un-American activities
- 840-840.2..........Diplomatic history. Foreign and general relations
- 840.6-840.8..........Biography (General)
- 841-843..........Kennedy's administration, 1961-November 22, 1963
- 842.9..........Assassination, funeral, memorial services, etc.
- 846-851..........Johnson's administrations, November 22, 1963-1969
- 855-861..........Nixon's administrations, 1969-August 9, 1974
- 860-861..........Watergate Affair. Resignation
- 865-868..........Ford's administration, August 9, 1974-1977
- 872-875..........Carter's administration, 1977-1981
- 876-880..........Reagan's administrations, 1981-1989
- 877.3......... Assassination attempt
- 881-884......... George H.W. Bush's administration, 1989-1993
- 885-889......... Clinton administration, 1993-2001