Look for the beginning of the call number or the general subject area your research would fall under to access the Library's reference e-books (encyclopedias, dictionaries, etc.).
| A | General Works | DR | Balkan Peninsula |
| AC | Collections | DS | Asia |
| AE | Encyclopedias | DT | Africa |
| AS | Societies | DU | Oceania |
| AY | Yearbooks, Almanacs | E-F | History: The Americas |
| B | Philosophy, Psychology, Religion | E | America (general) & United States (general) |
| B | Philosophy | F | United States (state and local), Canada |
| BC | Logic | & Other Individual Countries | |
| BF | Psychology | G | Geography, Anthropology, Recreation |
| BJ | Ethics | GB | Physical Geography |
| BL | Religion | GC | Oceanography |
| BM | Judaism | GF | Human Ecology |
| BP | Islam | GN | Anthropology |
| BQ | Buddhism | GR | Folklore |
| BR | Christianity | GT | Manners and Customs |
| BS | The Bible | GV | Recreation, Leisure |
| BX | Christian Denominations | H | Social Sciences |
| C | Auxiliary Sciences of History | HA | Statistics |