Sperber, Hans
Dictionary of American Political Terms/ Hans Sperber and Travis Trittschuh
McGraw-Hill, 1962
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American politics and government
edited by Stephen K. Bailey
United States Information Agency, 1973
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Concise dictionary of American biography
Charles Scribner's Sons, 1964
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Concise dictionary of American history
editor Thomas C. Cochran, Wayne Andrew
Charles Scribner's Sons , 1962
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Dictionary of American History: Aachen-Chattanooga Campaign
Charles Scribner's Sons, 1976
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