| A | General Works | 
| B | Philosophy, Psychology, and Religion | 
| C | Auxiliary Sciences of History | 
| D | General and Old World History | 
| E | History of America | 
| F | History of the United States and British, Dutch, French, and Latin America | 
| G | Geography, Anthropology, and Recreation | 
| H | Social Sciences | 
| J | Political Science | 
| K | Law | 
| L | Education | 
| M | Music | 
| N | Fine Arts | 
| P | Language and Literature | 
| Q | Science | 
| R | Medicine | 
| S | Agriculture | 
| T | Technology | 
| U | Military Science | 
| V | Naval Science | 
| Z | Bibliography, Library Science, and General Information Resources |