The JCCC Library, like many academic libraries, uses the Library of Congress Classification system to assign call numbers.
This system uses letters and numbers to sort books into subject areas, but each title does have its own unique call number.
This outline of the Library of Congress Classification can be used to determine where titles in a general subject area may be found in our library.
For more information about the Library of Congress Classification system, how to find materials in Billington Library, and other research help, please ask at the Reference Desk.
| A | General Works |
| AC | Collections, Series, Collected works |
| AE | Encyclopedias |
| AG | Dictionaries and other general reference works (other than Encyclopedias) |
| AI | Indexes |
| AM | Museums |
| AN | Newspapers |
| AP | Periodicals |
| AS | Societies, Academies |
| AY | Yearbooks, Almanacs, Directories |
| AZ | General history of scholarship and learning |
| B | Philosophy, Psychology, Religion |
| B | Philosophy (General) |
| BC | Logic |
| BD | Speculative philosophy |
| BF | Psychology |
| BH | Aesthetics |
| BJ | Ethics |
| BL-BY | Religion, Theology |
| BL | Religions, Mythology, Rationalism, Hinduism |
| BM | Judaism |
| BP | Islam, Bahai Faith |
| BQ | Buddhism |
| BR | Christianity |
| BS | Bible and exegesis |
| BT | Doctrinal Theology |
| BV | Practical theology |
| BX | Christian Denominations |
| C | Auxiliary Sciences of History (General) |
| CB | History of Civilization (General and general special only) |
| CC | Archaeology |
| CD | Diplomatics, Archives, Seals |
| CE | Technical Chronology, Calendar |
| CJ | Numismatics (Coins, Tokes, Medals, Medallions) |
| CN | Inscriptions, Epigraphy |
| CR | Heraldry |
| CS | Genealogy |
| CT | Biography |
| D | History (General) and History of Europe |
| D | General History |
| DA | Great Britain |
| DAW | Central Europe |
| DB | History of Austria, Austro-Hungarian Empire |
| DC | France, Andorra, Monaco |
| DD | Germany |
| DE | Greco-Roman World |
| DF | Greece |
| DG | Italy - Malta |
| DH | Low Countries, Benelux Countries (Belgium, Luxembourg) |
| DJ | Netherlands (Holland) |
| DJK | Eastern Europe (General) |
| DK | Russia, Soviet Union, Former Soviet Republics, Poland |
| DL | Northern Europe, Scandinavia |
| DP | Spain, Portugal |
| DQ | Switzerland |
| DR | Balkan Peninsula |
| DS | Asia |
| DT | Africa |
| DU | Oceania (South Seas – Australia, New Zealand, Polynesia) |
| DX | Gypsies |
| E-F | History, America |
| E | American and the United States History (general) |
| 11-143 America |
| 151-889 United States |
| F | United States (local) and America outside of U.S. History |
| 1-975 United States Local History |
| 1001-1145.2 British and Dutch America (including Canada) |
| 1170 French America |
| 1201-3799 Latin America, Spanish America |
| G | Geography, Anthropology, Recreation |
| G | General Geography, Atlases & Maps |
| GA | Mathematical geography, Cartography |
| GB | Physical Geography |
| GC | Oceanography |
| GE | Environmental Sciences |
| GF | Human Ecology, Anthropogeography |
| GN | Anthropology |
| GR | Folklore |
| GT | Manners and customs (general) |
| GV | Recreation, Leisure |
| H | Social Sciences |
| HA | Statistics |
| HB | Economic theory, Demography |
| HC | Economic history and conditions |
| HD | Industries, Land use, Labor |
| HE | Transportation and communications |
| HF | Commerce (including tariff) |
| HG | Finance |
| HJ | Public Finance |
| HM | Sociology (General) |
| HN | Social history and conditions, Social problems, Social reform |
| HQ | Family, Marriage, Women |
| HS | Societies: secret, benevolent, etc. |
| HT | Communities, Classes, Races |
| HV | Social Pathology, Social and public welfare, Criminology |
| HX | Socialism, Communism, Anarchism |
| J | Political Science |
| J | General Legislative and Executive papers |
| JA | Political Science (general) |
| JC | Political theory |
| JF-JJ | Political institutions and public administration – General |
| JK | Political institutions and public administration – United States |
| JL | Political institutions and public administration – America outside U.S. |
| JN | Political institutions and public administration – Europe |
| JQ | Political institutions and public administration – Asia, Africa, Australia, Oceania |
| JS | Local government. Municipal government |
| JV | Colonies and colonization. Emigration and immigration. International migration |
| JX | International Law (See also KZ for International Law) |
| JZ | International relations |
| K | Law |
| K | General law. Comparative and uniform law. Jurisprudence |
| KBM | Jewish law |
| KBP | Islamic law |
| KBR | History of canon law |
| KBU | Law of the Roman Catholic Church |
| KD-KDK | United Kingdom and Ireland |
| KDZ | America. North America |
| KE | Canada |
| KF | United States |
| KG | Latin America, Mexico and Central America, West Indies, Caribbean area |
| KH | South America |
| KJ-KKZ | Europe |
| KL-KWX | Asia and Eurasia, Africa, Pacific Area and Antarctica |
| KZ | Law of nations |
| L | Education |
| L | General works |
| LA | History of Education |
| LB | Theory and practice of education |
| LC | Special aspects of education |
| LD | Individual institutions – United States |
| LE | Individual institutions – America outside of U.S. |
| LF | Individual institutions – Europe |
| LG | Individual institutions – Asia, Africa, Oceania |
| LH | College and school magazines and papers |
| LJ | Student fraternities and societies, United States |
| LT | Textbooks |
| M | Music |
| M | Instrumental and Vocal music |
| ML | Literature of Music |
| 159-3775 History and criticism |
| 3800-3923 Philosophy and physics of music |
| 3928-3930 Literature for children |
| MT | Musical instruction and study |
| N | Fine Arts |
| N | Visual Arts |
| NA | Architecture |
| NB | Sculpture |
| NC | Drawing, Design, Illustration |
| ND | Painting |
| NE | Print Media |
| NK | Decorative arts |
| NX | Arts in general |
| P | Language and Literature |
| P | Philology. Linguistics |
| PA | Greek and Latin language and literature |
| PB | Modern languages. Celtic languages |
| PC | Romanic languages |
| PD | Germanic, Scandinavian languages |
| PE | English language |
| PF | West Germanic languages |
| PG | Slavic, Baltic, Albanian languages |
| PH | Uralic, Basque languages |
| PJ | Oriental languages and literatures |
| PK | Indo-Iranian languages and literatures |
| PL | Languages and literatures of Eastern Asia, Africa, Oceania |
| PM | Hyperborean, Indian, and artificial languages |
| PN | Literature – General |
| 441-1009.5 Literary history |
| 1010-1525 Poetry |
| 1600-3307 Drama |
| 3311-3503 Prose |
| 4001-4355 Oratory |
| 4390-4500 Diaries, Letters, Essays |
| 4699-5650 Journalism |
| 6010-6790 Collections of General literature |
| PQ | French, Italian, Spanish, and Portuguese literature |
| PR | English literature |
| PS | American literature |
| PT | German literature |
| PZ | Fiction and juvenile literature |
| Q | Science (General) |
| QA | Mathematics |
| QB | Astronomy |
| QC | Physics |
| QD | Chemistry |
| QE | Geology |
| QH | Natural History – Biology |
| QK | Botany |
| QL | Zoology |
| QM | Human anatomy |
| QP | Physiology |
| QR | Microbiology |
| R | Medicine |
| RA | Public aspects of medicine |
| RB | Pathology |
| RC | Internal Medicine |
| RD | Surgery |
| RE | Ophthalmology |
| RF | Otorhinolaryngology (Ear, Nose, Throat) |
| RG | Gynecology and obstetrics |
| RJ | Pediatrics |
| RK | Dentistry |
| RL | Dermatology |
| RM | Therapeutics. Pharmacology |
| RS | Pharmacy and materia medica |
| RT | Nursing |
| RV | Botanic, Thomsonian, and Eclectic Medicine |
| RX | Homeopathy |
| RZ | Other systems of medicine |
| S | Agriculture |
| SB | Plant culture |
| SD | Forestry |
| SF | Animal culture |
| SH | Aquaculture. Fisheries, Angling |
| SK | Hunting sports |
| T | Technology |
| TA | General engineering |
| TC | Hydraulic and ocean engineering |
| TD | Environmental technology, Sanitary engineering |
| TE | Highway engineering (roads and pavements) |
| TF | Railroad engineering and operation |
| TG | Bridge engineering |
| TH | Building construction |
| TJ | Mechanical engineering and machinery |
| TK | Electrical engineering, Electronics, Nuclear engineering |
| TL | Motor vehicles, Aeronautics, Astronautics |
| TN | Mining engineering, Metallurgy |
| TP | Chemical technology |
| TR | Photography |
| TS | Manufactures |
| TT | Handicrafts and Arts & Crafts |
| TX | Home economics |
| U | Military Science |
| UA | Organization, distribution, military situation |
| UB | Military administration |
| UC | Maintenance and transportation |
| UD | Infantry |
| UE | Cavalry, Armor |
| UF | Artillery |
| UG | Military engineering |
| UH | Other military services |
| V | Naval Science |
| VA | Navies: Organization, distribution, naval situation |
| VB | Naval administration |
| VC | Naval maintenance |
| VD | Naval seaman |
| VE | Marines |
| VF | Naval ordinance |
| VG | Other naval services |
| VK | Navigation, Merchant marine |
| VM | Naval architecture and engineering, Shipbuilding |
| Z | Bibliography, Library Science, Information Resources |
| Z | Books (general) Writing, Book industries, Libraries, and Bibliography |
| 4-115.5 Books, writing, paleography |
| 116-659 Book industries and trade |
| 662-1000.5 Libraries |
| 1001-8999 Bibliography |
| ZA | Information resources (General) |
