Número de Clasificación
- H - Social Science 56 results
- P - Language and Literature 13 results
- D - World History 4 results
- E - United States History 2 results
- F - General American History 2 results
- G - Geography, Anthropology, Recreation 2 results
- T - Technology 2 results
- B - Philosophy, Psychology, Religion 1 results
- N - Fine Arts 1 results