• 40 Videos, Slides, Films

• 40 Constitutional history
• 39 History
• 38 United States Constitution
• 26 Civil rights
• 25 Liberty
• 14 Politics and government
• 8 Economic conditions
• 7 Criminal law
• 7 Democracy
• 7 Legislation
• 7 Political participation
• 6 Civil law
• 6 Revolution, 1775-1783
• 4 Study and teaching
• 3 Courts
• 3 Political activists
• 3 Reconstruction (U.S. history, 1865-1877)
• 2 Moyers, Bill D
• 1 Due process of law
• 1 Firearms
• 1 Immigrants
• 1 Imperialism
• 1 Industries
• 1 Labor

• 40 Films Media Group
• 40 Films for the Humanities & Sciences (Firm)
• 33 Cambridge Educational (Firm)
• 3 WQED Multimedia
• 2 Alvin H. Perlmutter, Inc
• 1 Infobase
• 1 Public Affairs Television (Firm)
• 1 Public Broadcasting Service (U.S.)

• 40 English

• 1 Iceland

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