OpenStax
Open Stax: Post War Prosperity and Cold War Fears 1945 1960: The Cold War
Examines the causes of the Cold War, America's efforts to oppose the spread of Communism, and the hunt for Communist sympathizers within the United States.
Library of Congress
Loc: Attacks on Intelligentsia Suppressing Dissidents
A collection of Russian documents (letters,telegrams, etc.) that supported the suppression of dissidents. Also includes an introduction explaining the dissidents.