| - H: Social Sciences
- HA: Statistics
- HB-HJ: Economics and Business
- HB: Economic Theory and Demography
- HC: Economic History and Conditions
- HD: Industries, Land Use, Labor
- HE: Transportation and Communications
- HF: Commerce
- HG: Finance
- HJ: Public Finance
- HM: Sociology (General)
- HN: Social History, Problems, and Reform
- HQ: Family, Marriage, Sex and Gender
- HS: Societies and Clubs
- HT: Cities, Communities, Ethnicity
- HV: Social Service, Welfare, Criminology
- HX: Socialism, Communism, Utopias, Anarchism
- J: Political Science
- J-JA: General Legislative and Executive Papers; General Political Science
- JC: Political Theory
- JF-JQ: Political Institutions and Public Administration
- JF: Political Institutions and Public Administration (General)
- JK: Political Institutions and Public Administration (United States)
- JL: Political Institutions and Public Administration (Americas outside the US)
- JN: Political Institutions and Public Administration (Europe)
- JQ: Political Institutions and Public Administration (Outside the Americas and Europe)
- JS: Local and Municipal Government
- JV: Colonies, Colonization, Migration
- JZ: International Relations
|