| A |
General Works (Collections, Encyclopedias, Dictionaries, Periodicals) |
| B |
Philosophy, Psychology, Ethics, Religions |
| C |
Auxiliary Sciences of History incl. Archaeology, Genealogy, Biography |
| D |
History, World/General |
| E-F |
History: America and United States |
| G |
Geography, Geology, Ecology, Anthropology, etc. |
| H |
Social Sciences incl. Statistics, Finance, Sociology |
| J |
Political Science, Government, International Relations |
| K |
Law |
| L |
Education, Schools, and Textbooks |
| M |
Music, Music Literature, Musical Instruction |
| N |
Fine Arts incl. Architecture, Sculpture, Drawing, Painting |
| P |
Philology, Linguistics, Languages, and Literature |
| Q |
Science and Mathematics |
| R |
Medicine |
| S |
Agriculture, Forestry, Hunting and Fishing |
| T |
Technology incl. Engineering, Crafts, and Home |
| U |
Military Science incl. Air Force |
| V |
Naval Science |
| Z |
Bibliography and Library Science |