Encyclopedias, Almanacs, Transcripts, and Maps
- Underground Economy, Dimensions of
- Unionism from 1885 to 1922
- United Irish League Campaigns
- United Irish Parliamentary Reform Plan
- United Irish Societies from 1791 to 1803
- United Nations Commission on Human Rights
- United Nations General Assembly
- United Nations Sub-Commission on Human Rights
- United Nations War Crimes Commission
- United States Caribbean Dependencies
- United States Foreign Policies Toward Genocide and Crimes Against Humanity
- United States, Relations with
- Universal Jurisdiction
- Upanishadic Philosophy
- Ur, Rose-Marie Margaret, R.N.A. (Lambton-Kent-Middlesex)
- Urban Crowds
- Urban Institutions and Politics: The Early Modern Period
- Urban Institutions and Politics: The Modern Period
- Urban Life, Crafts, and Industry from 1500 to 1690
- Urbanization