Portal:Index

Card catalog

Class A - General Works

Class A: General works Subclass AC*: Collective works Subclass ACA: Collections Subclass ACB: Series Subclass AE*: Encyclopedias Subclass AG*: Dictionaries and general reference Subclass AGA: Reference works Subclass AI*: Indexes Subclass AM*: Museums British Museum Subclass AMA: Collectors and collecting Subclass AN*: Newspapers Bath Georgian newspaper • The New York Times • Obama Administration Press Briefings • Press releases • Pulitzers

Subclass AP*: Periodicals Amazing Stories • Land&Liberty • The New Yorker • Niles' Weekly Register • Notes and Queries • Popular Science Monthly • Punch • Time • Vanity Fair • Weird Tales Subclass AS*: Academies and learned societies Royal Asiatic Society Subclass AY*: Yearbooks Subclass AYA: Almanacs Subclass AYB: Directories Subclass AZ*: History of scholarship and learning Rede Lecture • Romanes Lecture Subclass AZA: The Humanities

Class B - Philosophy, Psychology, Religion

Class B: Philosophy, Psychology and Religion Subclass B**: General philosophy Subclass BC*: Logic Subclass BD*: Speculative philosophy Subclass BF*: Psychology Astrology Subclass BH*: Aesthetics Subclass BJ*: Ethics Ethical Culture Subclass BL*: Religion Confucianism • Deism • Hinduism • Jainism • Sermons • Scientology • Sikhism • Taoism (Investiture of the Gods) • Witchcraft • Yazidi Subclass BLA: Mythology Subclass BLB: Rationalism Freethinking Subclass BM*: Judaism Breslov • Cairo Geniza Subclass BP*: Islam Caliphs • Hadith Subclass BPA: Bahá'í Faith

Subclass BPB: Theosophy Subclass BQ*: Buddhism Buddhist sutras • Tipitaka Subclass BR*: Christianity Christmas • Doctors of the Church • Early Church Fathers series • First Council of Nicaea • Pre-Nicene Christianity • Post-Nicene Christianity • Theban Legion Subclass BS*: The Bible Biblioþēce Subclass BT*: Doctrinal theology Christ myth theory • Creationism • Eschatology • Saints Subclass BV*: Practical theology Americans United for Separation of Church and State • Ecumenical Councils • Investiture Controversy • Missionary Subclass BX*: Christian denominations Protestantism: Adventism (Branch Davidians) • Anglicanism (Anglican Church of Canada • Book of Common Prayer • Church of England • The Episcopal Church) • Baptists • Calvinism (Presbyterianism (Church of Scotland)) • Christadelphians • Christian Science • Lutheranism (Pilgrim Evangelical Lutheran Church (Chicago, Ill.) Ladies' Aid Society) • Mennonites • Methodism (Salvation Army) • Mormonism • Quakers • Swedenborgianism Roman Catholicism: Catholic Church Encyclicals • Council of Trent • First Vatican Council • Inquisition • Popes (Linus) • Second Vatican Council Other: Cathars • Donatism

Class C - Auxiliary Sciences of History (General)

Class C: Sciences of History Subclass CB*: History of civilization Subclass CC*: Archaeology Subclass CD*: Diplomatics Subclass CDA: Archives Subclass CDB: Seals Subclass CE*: Technical chronology and calendar

Subclass CJ*: Numismatics Subclass CN*: Inscriptions and epigraphy Subclass CR*: Heraldry Subclass CS*: Genealogy Subclass CT*: Biography Animal biographies • Autobiographies • Obituaries • People (Joe Hooper • Abdullah Khadr • Clifford Sims • George Thurston • Aymer de Valence)

Class D - General and Old World History

Class D: World History Subclass D**: General History Ancient cultures • Charlemagne • Cold War • Crusades • Eastern Question • Holocaust • Middle Ages • Nuremberg trials • Pirates • World War I • World War II Subclass DA*: History of Great Britain Chartism • Diggers • English Civil War (Verney family) • Domesday survey • Glorious Revolution • History of the United Kingdom in the Second World War Subclass DAW: History of Central Europe Subclass DB*: History of Austria Subclass DBA: History of Liechtenstein Subclass DBB: History of Hungary Subclass DBC: History of Czechoslovakia Subclass DC*: History of France Franco-Prussian War • French Revolution • Hundred Years War Subclass DCA: History of Andorra Subclass DCB: History of Monaco Subclass DD*: History of Germany Peasants' War Subclass DE*: History of the Greco-Roman world Subclass DF*: History of Greece Byzantine Empire: Byzantine Empire Greece: Ancient Greece • Lycurgus of Sparta • Messenian Wars • Peloponnesian War • Theseus Subclass DG*: History of Italy Rome: Ancient Rome • Dacian Wars • Gracchi • Numa Pompilius • Punic Wars • Romulus • Zenobia Subclass DGA: History of Malta Subclass DH*: History of the Low Countries

Subclass DJ*: History of the Netherlands Subclass DJK: History of Eastern Europe Russo-Turkish Wars Subclass DK*: History of Russia Crimean War • Russian Revolution Subclass DKB: History of the Former Soviet Republics Subclass DKC: History of Poland Subclass DL: History of Scandinavia Subclass DP*: History of Spain War of Spanish Succession Subclass DPA: History of Portugal Subclass DQ*: History of Switzerland Subclass DR*: History of the Balkan Peninsula Armenian Genocide Subclass DS*: History of Asia West: Ancient Near East • Invasion of Iraq • Pentagon's Harmony documents Central: Bagram Theater Internment Facility • International military forces in Afghanistan • Soviet Invasion of Afghanistan East: Lytton Report • Korean War • Opium Wars • Russo-Japanese War • Vietnam War Subclass DT*: History of Africa North: Ancient Egypt • Barbary Wars • Mahdist War • Rif Wars South: Anglo-Zulu War • Boer Wars Subclass DU*: History of Oceania History of Australia • Yagan Subclass DX*: History of the Romanies

Class E - History of America

Class E: States of the United States

States: Alabama • Alaska • Arizona • Arkansas • California • Colorado • Connecticut • Delaware • Florida • Georgia • Hawaii • Idaho • Illinois • Indiana • Iowa • Kansas • Kentucky • Louisiana • Maine • Maryland • Massachusetts • Michigan • Minnesota • Mississippi • Missouri • Montana • Nebraska • Nevada • New Hampshire • New Jersey • New Mexico • New York • North Carolina • North Dakota • Ohio • Oklahoma • Oregon • Pennsylvania • Rhode Island • South Carolina • South Dakota • Tennessee • Texas • Utah • Vermont • Virginia • Washington • West Virginia • Wisconsin • Wyoming

Other: Guam • New England • Puerto Rico

Class F - Local History of the United States and the Americas

Class F: American History

American Civil War • American Revolution (Intolerable Acts) • American Youth Congress • Chilean Coup • Confederate States of America (Southern Historical Society) • Dutch America • Federal Convention of 1787 • Fenian Raids • Guantanamo • Hudson's Bay Company • Kentucky and Virginia Resolutions • Mexican-American War • Panama Canal • Philippine-American War • Quantrill's Raid into Kansas • Samuel Mudd Documents • Slavery in the United States • Spanish-American War • United Nations Verification Mission in Guatemala • War of 1812 • World's Columbian Exposition

Class G - Geography, Anthropology, Recreation

Class G:Geography, Anthropology and Recreation Subclass G**: Geography Exploration Subclass G*A: Atlases and maps Subclass GA*: Mathematical geography Subclass GAA: Cartography Subclass GB*: Physical geography Hydrology • Mountains Subclass GC*: Oceanography Subclass GE*: Environment

Subclass GF*: Human geography Subclass GN*: Anthropology Cultural anthropology Subclass GR*: Folklore Arthurian legend • Mermaids • Reynard • Robin Hood Subclass GT*: Manners and customs April Fools' Day • Arbor Day • Fashion (Spirella) • Holidays (Halloween, Valentine's Day) • Housing • International Women's Day • Women's Equality Day Subclass GV*: Recreation and leisure Boy Scouts of America • Chess • Card games • Ice hockey • Indianapolis 500 • Sports

Class H - Social Sciences

Class H: Social Sciences Subclass H**: General social sciences Subclass HA*: Statistics Subclass HB*: Economic theory Subclass HBA: Demography Subclass HC*: Economic history and conditions Subclass HD*: Industries Agricultural labour Subclass HDA: Land use Subclass HDB: Labor Avocation Subclass HE*: Transportation and communications American Association of State Highway and Transportation Officials Subclass HF*: Commerce Subclass HG*: Finance Subclass HJ*: Public finance Subclass HM*: Sociology Subclass HN*: Social history Subclass HNA: Social problems Subclass HNB: Social reform Subclass HQ*: The Family Children • Erotica • Erotic poetry • Eugenics • LGBT • Men's Rights • Sexuality Subclass HQA: Marriage Polygamy Subclass HQB: Women Feminism • Women's suffrage

Subclass HS*: Societies Anonymous (group) • Secret societies • Wikimedia Foundation Subclass HT*: Communities Subclass HTA: Classes Slavery Subclass HTB: Race studies Aboriginals • Hate groups • Ku Klux Klan Subclass HV*: Social pathology Drugs and alcohol • Suicide Subclass HVA: Social and public welfare Animal Rights • Australasian Deaf and Dumb Association • Poverty Subclass HVB: Criminology Global War on Terror • IRS investigation of Al Capone • Prison • September 11th (Zacarias Moussaoui) • Terrorism • Torture Subclass HX*: Socialism Industrial Workers of the World Subclass HXA: Communism Subclass HXB: Anarchism CrimethInc.

Class I - Texts by Country

Class I: Texts by Country Subclass IC: Counties Cornwall • Surrey Subclass IN: Nations Afghanistan • Albania • Algeria • Andorra • Angola • Antigua and Barbuda • Argentina • Armenia • Australia • Austria • Azerbaijan • Bahamas • Bahrain • Bangladesh • Belarus • Belgium • Brazil • Brunei • Bulgaria • Cambodia • Canada • Chile • China • Croatia • Cyprus • Czechoslovakia • Côte d’Ivoire • Denmark (Greenland) • East Timor • Ecuador • Egypt • Estonia • Ethiopia • Falkland Islands • Fiji • Finland • France • Georgia • Germany • Greece • Grenada • Guatemala • Guinea-Bissau • Guinea • Guyana • Haiti • Hungary • Iceland • India • Indonesia • Iran • Iraq • Ireland • Israel • Italy • Jamaica • Japan • Kashmir • Kedah • Kelantan • Korea • Labuan • Laos • Latvia • Lebanon • Liberia • Libya • Lithuania • Luxembourg • Macedonia • Madagascar • Malacca • Malaya • Malaysia (Johor • Mali • Mexico • Monaco • Mongolia • Montenegro • Morocco • Myanmar • Negeri Sembilan • Nepal • Netherlands • New Zealand • Nigeria • North Borneo • North Korea • Northern Ireland • Norway • Pahang • Pakistan • Palau • Palestine • Panama • Papua New Guinea • Paraguay • Penang • Perak • Perlis • Peru • Philippines • Pitcairn Islands • Poland • Portugal • Qatar • Rhodesia • Romania • Russia • Rwanda • Sabah • Sarawak • Saudi Arabia • Scotland • Selangor • Serbia • Sierra Leone • Singapore • Somalia • South Africa • South Korea • South Sudan • Soviet Union • Spain • Sri Lanka • Sudan • Sweden • Switzerland • Syria • Taiwan • Portal:Tajikistan • Tanzania • Terengganu) • Thailand • Tibet • Trinidad and Tobago • Tunisia • Turkey • Uganda • Ukraine • United Kingdom (England • United States • Vatican • Venezuela • Vietnam • Wales) • Yemen • Zimbabwe

Subclass IR: Regions Bangsamoro • Mariana Islands • Samoan Islands • Virgin Islands Subclass IS: States Queensland Subclass IT: Towns and Cities Calcutta • New Orleans • Ottawa • Washington, D.C. Subclass IV: Villages Subclass IZ: Continents Africa • North America • South America • Antarctica • Asia • Europe • Oceania

Class J - Political Science

Class J: Political Science Subclass J**: General legislative and executive papers Government gazettes Subclass JA*: General political science Subclass JC*: Political theory Conservatism • Democracy • Human rights Subclass JF*: Political institutions and public administration Suffrage Subclass JJ*: Political institutions and public administration of North America Canadian Security Intelligence Service • Liberal Party of Canada • Prime Ministers of Canada • Truth and Reconciliation Commission of Canada Subclass JK*: Political institutions and public administration of the United States Federal Government of the United States Executive: Centers for Medicare and Medicaid Services • Federal Communications Commission • Food and Drug Administration • National Aeronautics and Space Administration • National Archives and Records Administration (NARA Collection) • National Hurricane Center (National Hurricane Center Advisories) • National Institutes of Health • National Institute of Standards and Technology • National Transportation Safety Board (Korean Air Flight 801 investigation • TWA Flight 800 investigation) • Presidents of the United States (Executive Orders • Gerald R. Ford Presidential Library and Museum • United States Presidential Proclamations • United States presidential veto messages) • United States Census Bureau • United States Customs Service • United States Department of Agriculture • United States Department of Commerce • United States Department of Defense • United States Department of Justice • United States Department of Labor • United States Department of State • United States Department of Transportation (Federal Railroad Administration • Federal Transit Administration) • United States Geological Survey • United States Internal Revenue Service • United States National Security Council • United States Postal Service Legislative: United States Congress • United States House of Representatives • United States Senate (Select Committee to Study Governmental Operations with Respect to Intelligence Activities) • Library of Congress (United States Copyright Office)

Subclass JK*: Political institutions and public administration of the United States (continued) State Level: Connecticut General Assembly • Delaware General Assembly • Florida Legislature • Georgia General Assembly • Indiana General Assembly • Maryland General Assembly • Massachusetts General Court • New Hampshire General Court • New Jersey Legislature • New York State Legislature (New York State Assembly • New York State Senate) • Pennsylvania General Assembly (Pennsylvania House of Representatives) • Rhode Island General Assembly • Vermont General Assembly • Virginia General Assembly Subclass JL*: Political institutions and public administration of the Americas Subclass JN*: Political institutions and public administration of Europe Parliament of Catalonia • Parliament of England • Parliament of the United Kingdom • Socialist Party of Great Britain Subclass JQ*: Political institutions and public administration of the world Arab League • Australian Freedom League • Hong Kong Annual Reports • Ministry of Foreign Affairs of the Russian Federation • Parliament of India • President of the Philippines • President of the Republic of Indonesia Subclass JS*: Local government Oxford City Council Subclass JV*: Colonies and colonization Subclass JVA: Emigration and immigration Emigration • Immigration Subclass JZ*: International relations ASEAN • European Union (Treaties and declarations of the European Union) • League of Nations • Supranational organizations • Treaties with Great Britain • United Nations

Class K - Law

For a complete list of subclasses see: List of Class K subclasses

Class K: Law Subclass KA*: General law Case law • Copyright law • Constitution • Constitutional documents • Legislative documents Subclass KB*: Religious law Subclass KDA: Law of the United Kingdom Acts of the Parliament of the United Kingdom • Constitution of the United Kingdom • Magna Carta Subclass KDB: Law of England Acts of the Parliament of England Subclass KDC: Law of Scotland Acts of the Pre-Union Parliament of Scotland Subclass KDE: Law of Northern Ireland Acts of the Parliament of Northern Ireland Subclass KDK: Law of Ireland Acts of the Pre-Union Parliament of Ireland Subclass KDZ: Law of North America British North America Acts Subclass KE*: Law of Canada Acts of Parliament of Canada • Applications to Parliament of Canada • Canadian case law • Canadian Government Appointments • Canadian Government Notices • Canadian Militia General Orders • Canadian Orders-in-Council • Canadian Proclamations • Constitutional documents of Canada Subclass KF*: Law of the United States Acts of the United States Congresses • Case law of the United States • United States copyright case law‎ • Unsuccessful attempts to amend the United States Constitution

Subclass KFA: Federal law of the United States Supreme Court of the United States United States Court of Appeals: First Circuit • Second Circuit • Third Circuit • Fourth Circuit • Fifth Circuit • Sixth Circuit • Seventh Circuit • Eighth Circuit • Ninth Circuit • Tenth Circuit • Eleventh Circuit • District of Columbia Circuit • Federal Circuit Subclass KFB: State law of the United States Pre-1945 State Roads in Florida • New Jersey case law • States' rights • Supreme Court of Pennsylvania (Commonwealth v. Abu-Jamal) Subclass KKV: Law of Sweden Constitution of Sweden Subclass KMH:Law of Iran Subclass KMJ: Law of Iraq Coalition Provisional Authority Subclass KNP: Law of the Republic of China Judicial Yuan Interpretations Subclass KNQ: Law of China Subclass KNW: Law of Indonesia Subclass KPM: Law of the Philippines Republic Acts Subclass KPA: Law of South Korea Supreme Court of South Korea Subclass KTL: Law of South Africa Acts of the Parliament of South Africa • Constitutional documents of South Africa • South African copyright law Subclass KUH: Law of Western Australia Western Australian parliamentary debates Subclass KZ*: Law of nations Bilateral documents • Multilateral documents • Treaties • United Nations General Assembly Resolutions • United Nations Security Council Resolutions

Class L - Education

Class L: Education Subclass L**: General education Commencement addresses Subclass LA*: History of education Subclass LB*: Theory and practice of education Children's education Subclass LC*: Special aspects of education Homeschooling Subclass LD*: Educational institutions of the United States Harvard University • University of Montana • University of Pennsylvania • Washington & Jefferson College • Woodstock College

Subclass LE*: Educational institutions of America Subclass LF*: Educational institutions of Europe Manchester University Subclass LG*: Educational institutions of the world Subclass LH*: College and school magazines and papers Subclass LJ*: Student fraternities and societies Subclass LT*: Textbooks

Class M - Music

Class M: Music Subclass M*: General Music Hymns • Marches • National anthems • Operas • Sheet music • Song lyrics

Subclass ML: Literature on music Subclass MT: Musical instruction and study

Class N - Fine Arts

Class N: Fine Arts Subclass N*: Visual arts Subclass NA: Architecture Subclass NB: Sculpture Subclass NC: Drawing, design and illustration Subclass ND*: Painting

Subclass NE*: Print media Subclass NK*: Decorative arts Jewellery Subclass NX*: Arts in general

Class P - Language and Literature

Class P: Language and literature Subclass P**: Philology and linguistics Subclass PA*: Greek language and literature Ancient Greek drama Subclass PAA: Latin language and literature Subclass PB*: Modern languages Subclass PBA: Celtic languages Subclass PC*: Romanic languages Subclass PD*: Germanic languages Subclass PDA: Scandinavian languages Subclass PE*: English language Subclass PF*: West Germanic languages Scots language Subclass PG*: Slavic languages and literatures Russian literature Subclass PGA: Baltic languages Subclass PGB: Albanian language Subclass PH*: Uralic languages Subclass PHA: Basque language Subclass PJ*: Oriental languages and literature Amharic literature • Arabic literature • Islamic poetry • Hebrew language and literature Subclass PK*: Indo-Iranian languages and literature Sanskrit Subclass PL*: Languages and literatures of Eastern Asia China: Chinese classics • Chinese literature India: Portal:Dravidian languages and literature Subclass PLA: Languages and literatures of Africa Subclass PLB: Languages and literatures of Oceania Inaugural Speeches by Philippine Presidents • Speeches by Philippine Presidents • State of the Nation Speeches by Philippine Presidents Subclass PM*: Hyperborean languages

Subclass PMA: American languages Subclass PMB: Artificial languages Subclass PN*: General literature Genres: Adventure • Christian fiction • Cowboys • Fantasy • Horror (Cthulhu Mythos • Ghost stories • Gothic fiction) • Humour • Mystery • Romance • Science fiction (Apocalyptic fiction) • Thriller Correspondance: Letters • Death threats • Resignations • Suicide notes Verse: Poetry • Ancient poetry • Christian poetry • Enlightenment poetry • Limericks • Love poetry • Medieval poetry • Modern poetry • Renaissance poetry • Romantic poetry • War poetry Speeches: Oration • Public addresses • Speeches • Early modern speeches • Modern speeches Children: Children's literature (Newbery Medal • Stratemeyer Syndicate) • Children's poetry Study of Literature: Literary criticism • Literary history Other: Comics • Drama • Journals • Modern fiction • Nobel Prize in Literature • Non-fiction (Modern non-fiction) • Plays • Quotations • Scripts Subclass PQ*: Romanic literature French literature • Italian literature • Portuguese literature • Spanish literature Subclass PR*: English literature Australia: Australian literature • Australian poetry Canada: Canadian poetry United Kingdom: British literature • English drama (Elizabethan drama • The Warwick Shakespeare) • The Bickerstaff-Partridge Papers • Exeter Book • Modern British literature • Poets Laureate of the United Kingdom • Speeches by British Prime Ministers Subclass PS*: American literature The Charles Henry Gauss Family Papers • Speeches by United States Presidents (Inaugural Speeches by United States Presidents • State of the Union Speeches by United States Presidents) • United States Poets Laureate Subclass PT*: Germanic literature Danish literature • Dutch literature • German literature (The Sorrows of Young Werther) • Old Norse literature Subclass PZ*: Fiction and juvenile belles lettres Children's fairy tales • Disney • Miscellaneous material • Nursery rhymes

Class Q - Science

Class Q: Science Subclass Q*: General Science International Catalogue of Scientific Literature Subclass QA: Mathematics International Congress of Mathematicians Subclass QB: Astronomy Extraterrestrial life • Meteoroids • Royal Astronomical Society Subclass QC: Physics Meteorology • Relativity Subclass QD: Chemistry Alchemy Subclass QE: Geology Cenozoic • Chicago Field Museum of Natural History • Geological Society of London • Mesozoic • Mineralogy • Paleontology (Dinosaurs • Eurypterids • Paleontology in the United States) • Paleozoic • Petrology Subclass QH: Natural History and Biology Taxonomy

Subclass QK: Botany Acacia hispidula • Acacia myrtifolia • Adenanthos cuneatus • Adenanthos obovatus • Banksia marginata • Banksia prionotes • Banksia sessilis • Banksia sphaerocarpa • Banksia spinulosa • Banksia verticillata • Billardiera scandens • Brachyloma daphnoides • Cephalotus follicularis • Ceratopetalum gummiferum • Corymbia gummifera • Eucalyptus capitellata • Eucalyptus obliqua • Eucalyptus piperita • Eucalyptus robusta • Eucalyptus tereticornis • Grevillea buxifolia • Grevillea linearifolia • Grevillea sericea • Grevillea speciosa • Leucopogon ericoides • Leucopogon lanceolatus • Lissanthe strigosa • Lomatia silaifolia • Monotoca elliptica • Monotoca scoparia • Pimelea linifolia • Platylobium formosum • Pultenaea stipularis • Scaevola ramosissima • Styphelia tubiflora • Synaphea spinulosa • Telopea speciosissima • Tetratheca juncea Subclass QL: Zoology Birds • Insects (Index Librorum Haliday) • Mammals Subclass QM: Human Anatomy Subclass QP: Physiology Subclass QR: Microbiology

Class R - Medicine

Class R: Medicine Subclass R**: General medicine British Medical Journal • The Lancet • Provincial Medical and Surgical Association Subclass RA*: Public aspects of medicine Health • International Sanitary Conferences Subclass RB*: Pathology Subclass RC*: Internal medicine American Association for Respiratory Care Subclass RD*: Surgery Subclass RE*: Ophthalmology Subclass RF*: Otorhinolaryngology Subclass RG*: Gynecology and obstetrics Abortion

Subclass RJ*: Pediatrics Subclass RK*: Dentistry Subclass RL*: Dermatology Subclass RM*: Therapeutics Subclass RMA: Pharmacology Subclass RS*: Pharmacy and materia medica Subclass RT*: Nursing Subclass RV*: Botanic, Thomsonian and eclectic medicine Subclass RX*: Homeopathy Subclass RZ*: Other systems of medicine

Class S - Agriculture

Class S: Agriculture Subclass SA*: General agriculture Subclass SB*: Plant culture Subclass SD*: Forestry Subclass SF*: Animal culture Apiculture • Horsemanship

Subclass SH*: Aquaculture and fisheries Subclass SHA: Angling Subclass SK*: Hunting sports

Class T - Technology

Class T: Technology Subclass T**: General technology Patents • U. S. patents Subclass TA*: Civil engineering FTA (Geotechnical Risk Management at FTA • Project Management at FTA and its Grantees • Project Management Oversight at FTA • Risk Management at FTA • Program Events at FTA) • MTA Capital Construction Subclass TC*: Hydraulic engineering Subclass TCA: Ocean engineering Subclass TD*: Environmental technology Subclass TDA: Sanitary engineering Subclass TE*: Highway engineering Subclass TF*: Railroad engineering and operation Channel Tunnel Subclass TG*: Bridge engineering Subclass TH*: Building construction Subclass TJ*: Mechanical engineering and machinery Subclass TK*: Electrical engineering Radio • Telegraphy • Telephony

Subclass TKA: Electronics Subclass TKB: Nuclear engineering Subclass TL*: Motor vehicles Subclass TLA: Aeronautics Subclass TLB: Astronautics Cassini-Huygens • Space exploration Subclass TN*: Mining engineering Subclass TNA: Metallurgy Subclass TP*: Chemical technology Subclass TR*: Photography Film (Star Film Company • Universal Newsreel • Van Beuren Studios) Subclass TS*: Manufactures Subclass TT*: Handicrafts, arts and crafts Subclass TX*: Home economics Cookbooks • Vegetarianism

Class U - Military Science

Class U: Military Science Subclass U**: General military science Regret to Inform • Wars • Weapons Subclass UA*: Armies British Army • United States Army (1901–1903—Reforming the Army • US Army Lineage Series • US Army Lineage and Honors) • NATO Subclass UB*: Military administration Conscription Subclass UC*: Maintenance and transportation

Subclass UD*: Infantry Subclass UE*: Cavalry Subclass UF*: Artillery Subclass UG*: Military engineering United States Army Corps of Engineers Subclass UGA: Air forces United States Air Force Subclass UH*: Other military services War Correspondence

Class V - Naval Science

Class V: Naval Science Subclass V**: General Naval science Subclass VA*: Navies Royal Navy • United States Navy Subclass VB*: Naval administration Subclass VC*: Naval maintenance Subclass VD*: Naval seamen Subclass VE*: Marines United States Marine Corps

Subclass VF*: Naval ordnance Subclass VG*: Minor services of navies Subclass VK*: Navigation RMS Titanic • Shipwrecks Subclass VKA: Merchant marine Subclass VM*: Shipbuilding and naval architecture

Class X - Wikisource

Class X: Wikisource Subclass XA*: WikiProjects Influential Books • Salvation of Israel Project Subclass XE*: Era Ancient and Classical texts • Medieval texts • Modern texts

Subclass XP*: Processes Featured texts • Proofreading milestones • Top 100 authors Subclass XY*: Years 1880 • 1893 • 1903 • 1904 • 1906 • 1912 • 1916 • 1920 • 1922 • 1923 • 1934 • 2001

Class Z - Bibliography, Library Science

Class Z - Bibliography and Library Science Subclass ZA: Information resources Audio recordings Subclass ZB: Books Subclass ZC: Writing Subclass ZD: Paleography Subclass ZE: Book industries and trade American Type Founders License documents

Subclass ZE: Book industries and trade (continued) Publishing companies: Alfred A. Knopf • American Book Co. • Angus & Robertson • Ascherberg, Hopwood & Crew, Limited • Cambridge University Press • Century Co. • Chappell Harms, Inc. • Charles Scribner's Sons • Dodd, Mead & Company • Francis, Day & Hunter Ltd. • Frederick A. Stokes & Brother • Ginn & Co. • G.P. Putnam's Sons • Harvard University Press • Heath & Co. • J. W. Arrowsmith • The Lawyers Co-operative Publishing Co. • Little, Brown and Company • Macmillan and Company • McLoughlin Brothers • Oxford University Press • P. J. Kennedy & Sons • R. Shugg & Co. • Religious Tract Society • Time Inc. • Yale University Press Subclass ZF: Libraries Subclass ZG: Bibliography Anonymous texts • Banned books