Energy, Government, and Defense magazines
- Commonwealth Men
- Communism and Anticommunism
- Conscription, World War I
- Conscription, World War II
- Constitution: Bill of Rights
- Constitution: Creating a Republic
- Constitutional Amendments and Changes
- Containment and Détente
- Continental Congresses
- Court Cases, Speeches, and Testimony
- Davis, Varina Howell
- Dawes Severalty Act
- Disarmament and Arms Control (1898–1945)
- Dissent in World War I and World War II
- Drinker, Elizabeth
- Drugs and Vietnam
- Economic Change and Industrialization
- Economy, World War I
- Economy, World War II
- Elections, Presidential: The Civil War