| Subclass J | General legislative and executive papers |
| Subclass JA | Political science (General) |
| Subclass JC | Political theory |
| Subclass JF | Political institutions and public administration |
| Subclass JJ | Political institutions and public administration (North America) |
| Subclass JK | Political institutions and public administration (United States) |
| Subclass JL | Political institutions and public administration (Canada, Latin America, etc.) |
| Subclass JN | Political institutions and public administration (Europe) |
| Subclass JQ | Political institutions and public administration (Asia, Africa, Australia, Pacific Area, etc.) |
| Subclass JS | Local government. Municipal government |
| Subclass JV | Colonies and colonization. Emigration and immigration. International migration |
| Subclass JX | International law, see JZ and KZ |
| Subclass JZ | International relations |
https://www.loc.gov/aba/cataloging/classification/lcco/lcco_j.pdf