1. General Studies
1.1. Class A: General Studies
1.1.1. Subclass AC: Series & General Works
1.1.2. Subclass AE: Encyclopedias
1.1.3. Subclass AG: Dictionaries @ General Reference
1.1.4. Subclass AI: Indexes
1.1.5. Subclass AM: Museums and Museum Collections
1.1.6. Subclass AN: Newspapers
1.1.7. Subclass AP: Periodicals
1.1.8. Subclass AS: Academies & Academic Societies
1.1.9. Subclass AY: Yearbooks, Almanacs & Directories
1.1.10. Subclass AZ: History of Scholarship and Learning
2. Humanities
2.1. Class B: Religion and Philosophy
2.1.1. Subclass B: General Philosophy
2.1.2. Subclass BC: Logic
2.1.3. Subclass BD: Speculative Philosophy
2.1.4. Subclass BF: Psychology
2.1.5. Subclass BH: Aesthetics
2.1.6. Subclass BJ: Ethics
2.1.7. Subclass BL: Religions, Mythology & Rationalism
2.1.8. Subclass BM: Judaism
2.1.9. Subclass BP: Islam, Bahaism, Theosophy, etc.
2.1.10. Subclass BQ: Buddhism
2.1.11. Subclass BR: Christianity
2.1.12. Subclass BS: The Bible
2.1.13. Subclass BT: Doctrinal Theology
2.1.14. Subclass BV: Practical Theology
2.2. Class C: Auxiliary Sciences To History
2.2.1. Subclass C: General
2.2.2. Subclass CB: History of Civilization
2.2.3. Subclass CC: Archaeology
2.2.4. Subclass CD: Diplomatics, Archives & Seals
2.2.5. Subclass CE: Chronologies & Calendars
2.2.6. Subclass CJ: Numismatics (Coinage)
2.2.7. Subclass CN: Inscriptions & Epigraphy
2.2.8. Subclass CR: Heraldry
2.2.9. Subclass CS: Genealogy
2.2.10. Subclass CT: Biography
2.3. Class D: History of the Old World
2.3.1. Subclass D: General History
2.3.2. Subclass DA: History of the British Isles
2.3.3. Subclass DAW: History of Central Europe
2.3.4. Subclass DB: History of Austria, Hungary, Lichtenstein, the Czech Republic & Slovakia
2.3.5. Subclass DD: History of Germany
2.3.6. Subclass DE: Greco-Roman History
2.3.7. Subclass DF: History of Greece
2.3.8. Subclass DG: History of Italy
2.3.9. Subclass DH: History of Belgium & Luxembourg
2.3.10. Subclass DJ: History of the Netherlands
2.3.11. Subclass DJK: History of Eastern Europe
2.3.12. Subclass DK: History of Russia, Poland and the former Soviet Union
2.3.13. Subclass DL: History of Scandanavia
2.3.14. Subclass DP: History of Spain & Portugal
2.3.15. Subclass DQ: History of Switzerland
2.3.16. Subclass DR: History of the Balkans
2.3.17. Subclass DS: History of Asia
2.3.18. Subclass DT: History of Africa
2.3.19. Subclass DU: History of Oceania
2.3.20. Subclass DX: History of the Romani
2.3.21. Subclass DC: History of France
2.4. Class E: History of the United States
2.4.1. E11-E99: Native American History
2.4.2. E101-E135: Exploration of the United States
2.4.3. E151-E909: History of the United States
2.5. Class F: History of the Americas
2.5.1. F1-F975: United States Local History
2.5.1.1. F1-F105: New England States
2.5.1.1.1. F16-F30: Maine
2.5.1.1.2. F31-F45: New Hampshire
2.5.1.1.3. F46-F60: Vermont
2.5.1.1.4. F61-F75: Massachusetts
2.5.1.1.5. F76-F90: Rhode Island
2.5.1.1.6. F91-F105: Connecticut
2.5.1.2. F106-F205: The Mid-Atlantic States
2.5.1.2.1. F116-F130: New York
2.5.1.2.2. F131-F145: New Jersey
2.5.1.2.3. F146-F160: Pennsylvania
2.5.1.2.4. F161-F175: Delaware
2.5.1.2.5. F176-F190: Maryland
2.5.1.2.6. F191-F205: District of Columbia
2.5.1.3. F206-F475: The Southern States
2.5.1.3.1. F221-F235: Virginia
2.5.1.3.2. F236-F250: West Virginia
2.5.1.3.3. F251-F265: North Carolina
2.5.1.3.4. F266-F280: South Carolina
2.5.1.3.5. F281-F295: Georgia
2.5.1.3.6. F306-F320: Florida
2.5.1.3.7. F321-F335: Alabama
2.5.1.3.8. F336-F350: Mississippi
2.5.1.3.9. F366-380: Louisiana
2.5.1.3.10. F381-F395: Texas
2.5.1.3.11. F406-420: Arkansas
2.5.1.3.12. F431-F445: Tennessee
2.5.1.3.13. F446-F460: Kentucky
2.5.1.3.14. F461-F475: Missouri
2.5.1.4. F476-F590: The Old Northwest States
2.5.1.4.1. F486-F500: Ohio
2.5.1.4.2. F521-F535: Indiana
2.5.1.4.3. F536-F550: Illinois
2.5.1.4.4. F561-F575: Michigan
2.5.1.4.5. F576-F590: Wisconsin
2.5.1.5. F590.3-F705: The Midwest States
2.5.1.5.1. F601-F615: Minnesota
2.5.1.5.2. F616-F630: Iowa
2.5.1.5.3. F631-F645: North Dakota
2.5.1.5.4. F646-F660: South Dakota
2.5.1.5.5. F661-F675: Nebraska
2.5.1.5.6. F676-F690: Kansas
2.5.1.5.7. F691-F705: Oklahoma
2.5.1.6. F721-F850: The Southwestern & Intermountain Western States
2.5.1.6.1. F726-F740: Montana
2.5.1.6.2. F741-F755: Idaho
2.5.1.6.3. F756-F770: Wyoming
2.5.1.6.4. F771-F785: Colorado
2.5.1.6.5. F791-F805: New Mexico
2.5.1.6.6. F806-F820: Arizona
2.5.1.6.7. F821-F835: Utah
2.5.1.6.8. F836-F850: Nevada
2.5.1.7. F850.5-F970: Pacific States and Territories
2.5.1.7.1. F856-F870: California
2.5.1.7.2. F871-F885: Oregon
2.5.1.7.3. F886-F900: Washington
2.5.1.7.4. F901-F951: Alaska
2.5.1.7.5. For Hawaii use: DU620-DU629
2.5.2. F1001-F1141: History of Canada
2.5.3. F1141-F1141.2: History of British Colonies in North America
2.5.4. F1170: History of French Colonies in North America
2.5.5. F1201-F1392: History of Mexico
2.5.6. F1421-F1577: History of Central America
2.5.6.1. F1421-F1440: History of Central America
2.5.6.2. F1435-F1435.3: History of the Maya
2.5.6.3. F1441-F1457: History of Belize
2.5.6.4. F1461-F1477: History of Guatemala
2.5.6.5. F1481-F1497: History of El Salvador
2.5.6.6. F1501-F1517: History of Honduras
2.5.6.7. F1521-F1537: History of Nicaragua
2.5.6.8. F1541-F1557: History of Costa Rica
2.5.6.9. F1561-F1577: History of Panama
2.5.7. F1601-F2191: History of the West Indies
2.5.8. F2251-F2299: History of Colombia
2.5.9. F2301-F2349: History of Venezuela
2.5.10. F2351-F2471: History of Guiana
2.5.10.1. F2361-F2391: History of British Guiana (Guyana)
2.5.10.2. F2401-F2431: History of Dutch Guiana (Surinam)
2.5.10.3. F2441-F2471: History of French Guiana
2.5.11. F2501-F2659: History of Brazil
2.5.12. F2661-F2699: History of Paraguay
2.5.13. F2701-F2799: History of Uruguay
2.5.14. F2801-F3031.5: History of Argentina
2.5.14.1. F3031-F3031.5: History of the Falkland Islands
2.5.15. F3051-F3285: History of Chile
2.5.16. F3301-F3359: History of Bolivia
2.5.17. F3401-F3619: History of Peru
2.5.18. F3701-F3799: History of Ecuador
3. Social Sciences
3.1. Class G: Geography, Anthropology & Recreation
3.1.1. Subclass G: General Geography, Atlases & Maps
3.1.2. Subclass GA: Mathematical Geography & Cartography
3.1.3. Subclass GB: Physical Geography
3.1.4. Subclass GC: Oceanography
3.1.5. Subclass GE: Environmental Sciences
3.1.6. Subclass GF: Human Geography & Anthrogeography
3.1.7. Subclass GN: Anthropology
3.1.8. Subclass GR: Folklore
3.1.9. Subclass GV: Recreation & Leisure
3.2. Class H: Social Sciences
3.2.1. Subclass H: General
3.2.2. Subclass HA: Statistics
3.2.3. Subclass HB: Economic Theory & Demography
3.2.4. Subclass HC: Economic History & Conditions
3.2.5. Subclass HD: Industries, Land Use & Labor
3.2.6. Subclass HE: Transportation & Communications
3.2.7. Subclass HF: Commerce
3.2.8. Subclass HG: Finance
3.2.9. Subclass HJ: Public Finance
3.2.10. Subclass HM: Sociology
3.2.11. Subclass HN: Social History, Social Problems & Social Reform
3.2.12. Subclass HQ: Family, Marriage & Women
3.2.13. Subclass HS: Secret & Benevolent Societies
3.2.14. Subclass HT: Communities, Classes & Race
3.2.15. Subclass HV: Criminology, Social Pathology & Public Welfare
3.2.16. Subclass HX: Socialism, Communism & Anarchism
3.3. Class J: Political Science
3.3.1. Subclass J: General Legislative & Executive Papers
3.3.2. Subclass JA: General Political Science
3.3.3. Subclass JC: Political Theory
3.3.4. Subclasses JF-JQ: Political Institutions & Public Administration
3.3.4.1. JF: General
3.3.4.2. JJ: in North America
3.3.4.3. JK: In the United States
3.3.4.4. JL: In the Western Hemisphere (outside of N. America)
3.3.4.5. JN: In Europe
3.3.4.6. JQ: In Asia, Africa & Oceania
3.3.5. Subclass JS: Local & Municipal Government
3.3.6. Subclass JV: Colonialism, Emigration & Immigration
3.3.7. Subclass JZ: International Relations
3.4. Class K: Law
3.4.1. Subclass K: Law in General, Jurisprudence
3.4.2. Subclass KB: Religious Law
3.4.3. Subclass KD: The Laws of the United Kingdom, Ireland, etc...
3.4.4. Subclass KE: Laws of Canada
3.4.5. Subclass KF: Laws of the United States
3.4.6. Subclass KG: Laws of Central America & the Caribbean
3.4.7. Subclass KH: Laws of South America
3.4.8. Subclasses KJ-KK: Laws of Europe
3.4.9. Subclasses KL-KW: Laws of Asia, Eurasia, Africa, Oceania & Antarctica
3.4.10. Subclass KZ: Law of Nations
3.5. Class L: Education
3.5.1. Subclass L: General
3.5.2. Subclass LA: History
3.5.3. Subclass LB: Theory & Practice
3.5.4. Subclass LC: Special Aspects
3.5.5. Subclass LD: Individual Institutions in the U.S.
3.5.6. Subclass LE: Individual Institutions in the Americas (outside of the U.S.)
3.5.7. Subclass LF: Individual Institutions in Europe
3.5.8. Subclass LG: Individual Institutions in Asia, Africa & Oceania
3.5.9. Subclass LH: College & School Magazines & Newspapers
3.5.10. Subclass LJ: Student Fraternities and Sororities in the U.S.
3.5.11. Subclass LT: Textbooks
4. Arts & Literature
4.1. Class M: Music
4.1.1. Subclass M: Music
4.1.2. Subclass ML: Music and Literature
4.1.3. Subclass MT: Instruction and Study
4.2. Class N: Art
4.2.1. Subclass N: Visual Arts
4.2.2. Subclass NA: Architecture
4.2.3. Subclass NB: Sculpture
4.2.4. Subclass NC: Drawing, Design & Illustration
4.2.5. Subclass ND: Painting
4.2.6. Subclass NE: Print Media
4.2.7. Subclass NK: Decorative Arts
4.2.8. Subclass NX: Arts in General
4.3. Class P: Languages & Literature
4.3.1. Subclass P: Philology & Linguistics
4.3.2. Subclass PA: Greek and Latin Language & Literature
4.3.3. Subclass PB: Celtic Languages
4.3.4. Subclass PC: Romance Languages
4.3.5. Subclass PD: Germanic & Scandinavian Languages
4.3.6. Subclass PE: English Language
4.3.7. Subclass PF: West Germanic Languages
4.3.8. Subclass PG: Slavic, Baltic & Albanian Languages
4.3.9. Subclass PH: Uralic & Basque Languages
4.3.10. Subclass PJ: Asian Languages & Literature
4.3.11. Subclass PK: Indo-Iranian Languages & Literature
4.3.12. Subclass PL: East Asian, African & Oceanian Languages & Literature
4.3.13. Subclass PM: Hyperborean, Indian and Artificial Languages
4.3.14. Subclass PN: General Literature
4.3.15. Subclass PQ: French, Italian, Spanish & Portuguese Literature
4.3.16. Subclass PR: British Literature
4.3.17. Subclass PS: American Literature
4.3.18. Subclass PT: Germanic & Scandinavian Literature
4.3.19. Subclass PZ: Juvenile Fiction & Literature