| D | 1-1075 | General World History. |
| 1-24.5 | General |
| 1 | Periodicals, Societies |
| 2 | Yearbooks, Registers |
| 3 | Congresses, Conferences, etc., By Country |
| 5 | Sources and Documents, Collections |
| 5.5 | Minor Sources, Source Books |
| 6 | Collected Works: Several Authors |
| 7 | Collected Works: Individual Authors |
| 8 | Minor Works, Pamphlets, etc. |
| 9 | Dictionaries |
| 10 | Minor Reference Books (anecdotes, curiosa, allusions, etc.) |
| 11 | Chronological Tables, etc.: General |
| 11.5 | Chronological Tables, etc.: Special |
| 12 | Pictorial Atlases |
| 13 | Historiography: General Works |
| 13.2 | Historiography: Criticisms and Reviews |
| 14 | Biographies of Historians: Collective |
| 15 | Biographies of Historians: Individual, A-Z |
| 16 | Methodology, Relation to Other Sciences |
| 16.2 | Study and Teaching: General Works |
| 16.25 | Study and Teaching: General Special |
| 16.3 | Study and Teaching: United States |
| 16.4 | Study and Teaching: Other Countries, A-Z |
| 16.5 | Study and Teaching: Schools, by Place or Name, A-Z |
| 16.7 | Philosophy of History: General Works to 1800 |
| 16.8 | Philosophy of History: General Works 1801- |
| 16.9 | Special Topics |
| 17 | World Histories: Chronicles and Works Written before 1525 |
| 18 | World Histories: Chronicles and Works Written from 1525 to 1800 |
| 20 | World Histories: General Works, 1801- |
| 21 | World Histories: Compends, Textbooks, Outlines, Syllabi |
| 21.1 | World Histories: Pictoral Works |
| 21.3 | World Histories: General Special |
| 21.5 | World Histories: Historical Geography |
| 22 | History of Several Countries Treated Together |
| 23 | General Popular Works |
| 23.5 | Comic and Satirical Works |
| 24 | Historical Events Not Restricted to One Country or Period |
| 24.5 | Other |
| 25-27 | Military and Naval History |
| 31-34 | Political and Diplomatic History |
| 51-95 | Ancient History |
| 101-110.5 | Medieval and Modern History (General) |
| 111-203 | Medieval History |
| 135-149 | Migrations |
| 151-173 | Crusades |
| 175-195 | Latin Kingdom of Jerusalem, Latin Orient |
| 198-199.7 | Islamic Empire |
| 200-203 | Later Medieval (11th-15th Centuries) |
| 204-893 | Modern History |
| 219-234 | 1453-1648 |
| 242-283.5 | 1601-1715 |
| 251-271 | Thirty Years' War, 1618-1648 |
| 274.5-6 | Anglo-French War, 1666-1667 |
| 275-276 | War of Devolution, 1667-1668 |
| 277-278.5 | Dutch War, 1672-1678 |
| 279-280.5 | War of the Grand Alliance, 1688-1697 |
| 281-283.5 | War of Spanish Succession, 1701-1714 |
| 284-297 | 1715-1789 |
| 291-294 | War of Austrian Succession, 1740-1748 |
| 297 | Seven Years' War, 1756-1763 |
| 301-309 | 1789-1815, French Revolutionary and Napoleonic Period |
| 351-400 | Nineteenth Century |
| 371-379 | Eastern Question |
| 383 | 1815-1830, Holy Alliance, Quadruple Alliance - 1815 |
| 394-400 | 1871-, Later Nineteenth Century |
| 410-850 | Twentieth Century |
| 501-680 | World War I (1914-1918) |
| 720-728 | Period Between World Wars (1919-1939) |
| 731-838 | World War II (1939-1945) |
| 839-850 | Post World War II History (1945- ) |
| 880-888 | Developing Countries |
| 890-893 | Eastern Hemisphere |
| 900-1075 | Europe (General) |
| 901-980 | Description and Travel |
| 1050-1075 | History |
| DA | 1-995 | Great Britian, Ireland. |
| 10-18 | British Empire |
| 20-690 | England |
| 20-27.5 | General |
| 28-592 | History |
| 28-35 | General |
| 40-89.6 | Political, Military, Naval, and Air Force History |
| 90-125 | Antiquities, Social Life and Customs, Races |
| 129-260 | Early and Medieval History to 1485 |
| 140-199 | Celts, Romans, Saxons, Danes, Normans |
| 200-260 | 1154-1485, Angevins, Plantagenets, Lancaster-York |
| 250-260 | War of the Roses, 1455-1485 |
| 300-592 | Modern, 1485- |
| 310-360 | Tudors, 1485-1603 |
| 350-360 | Elizabethan Age, Elizabeth I |
| 385-398 | Early Stuarts, 1603-1642 |
| 400-429 | Civil War and Commonwealth, 1642-1660 |
| 430-497 | Later Stuarts, 1660-1714 |
| 498-592 | House of Hanover (Windsor), 1714- |
| 550-565 | Victorian Era, 1837-1901 |
| 566-592 | Twentieth Century |
| 600-668 | Description and Travel |
| 670 | Counties, Regions, etc, A-Z |
| 675-689 | London |
| 690 | Other Cities, Towns, etc, A-Z |
| 700-745 | Wales |
| 700-713 | General |
| 714-722.1 | History |
| 725-735 | Description and Travel, etc. |
| 740-745 | Local History and Description |
| 750-890 | Scotland |
| 750-757 | General |
| 758-826 | History |
| 758-763 | Genera; |
| 765-774.5 | Political and Military History, Antiquities, etc. |
| 777-790 | Early and Medieval to 1603 |
| 783.2-45 | War of Independence, 1285-1371 |
| 783.5-790 | Stuarts |
| 800-814.5 | 1603-1745 |
| 807 | The Union, 1707 |
| 813-814.5 | The Jacobite Movements, 1707-1745 |
| 815-826 | Nineteenth-Twentieth Centuries |
| 850-878 | Description and Travel |
| 880-890 | Local History and Description |
| 900-995 | Ireland |
| 900-908.7 | General |
| 910-965 | History |
| 910-916.7 | General History |
| 916.8-927 | Antiquities, Social Life and Customs, Races |
| 930-937.5 | Early and Medieval to 1603 |
| 933.3 | English Conquest, 1154-1189 |
| 938-965 | Modern, 1603- |
| 949.5 | The Union, 1800 |
| 950-965 | Nineteenth-Twentieth Centuries |
| 963 | Republic of Ireland, Eire, 1922- |
| 969-987 | Description and Travel, etc. |
| 990-995 | Local History and Description |
| 990.U45-46 | Northern Ireland (Ulster) |
| DAW | 1001-1051 | Central Europe. |
| 1001-1028 | General |
| 1031-1051 | History |
| DB | 1-3150 | Austria, Hungary, Czech Republic, Slovakia. |
| 1-879 | Austria |
| 881-898 | Lichtenstein |
| 901-999 | Hungary |
| 2000-3150 | Czech Republic, Slovakia (former Czechoslovakia) |
| DC | 1-947 | France, Andorra, Monaco. |
| 1-20.5 | General |
| 21-29 | Description and Travel |
| 139-249 | French Revolutionary and Napoleonic Period |
| 630-655.5 | Alsace-Lorraine |
| 701-790 | Paris |
| 921-930 | Andorra |
| 941-947 | Monaco |
| DD | 1-901 | Germany. |
| 1-21 | General |
| 21.5-43 | Description and Travel |
| 201-261.7 | 19th-20th Centuries |
| 253-256.5 | The Third Reich (1933-1945) |
| 280-289 | East Germany |
| 301-454 | Prussia |
| 701-901 | Local History and Description |
| DE | 1-100 | The Mediterranean Region, The Greco-Roman World. |
| 1-15 | General |
| 23-31 | Geography |
| 46-73 | Antiquities, Social Life and Customs, Races |
| 80-93 | History |
| DF | 10-951 | Greece. |
| 10-289 | Ancient Greece |
| 501-649 | Medieval Greece, Byzantine Empire, 323-1453 |
| 701-951 | Modern Greece |
| 915-936 | Athens |
| 951 | Other Cities and Towns |
| DG | 11-999 | Italy. |
| 11-365 | Ancient Italy, Rome to 476 |
| 61-69 | Rome (Ancient City) |
| 401-583 | Medieval and Modern Italy, 476- |
| 670-684.72 | Venice |
| 791-800 | Papal States, Vatican City |
| 803-817.3 | Rome (Modern City) |
| 861-868 | Sicily |
| 987-999 | Malta |
| DH | 1-925 | Belgium, Luxembourg. |
| 401-811 | Belgium |
| 901-925 | Luxembourg |
| DJ | 1-500 | Netherlands (Holland) |
| 1-30 | General |
| 34-40 | Description and Travel |
| 95-289 | History |
| 401-411 | Local History and Description |
| DK | 1-4800 | Russia, Former Soviet Republics, Poland |
| 1-18 | General |
| 70-112 | Early History to 1613 |
| 113-264.8 | House of Romanov, 1613-1917 |
| 265 | Revolution, 1917-1921 |
| 541-579 | St. Petersburg, Leningrad |
| 590-609 | Moscow |
| 751-781 | Siberia |
| 4010-4800 | Poland |
| DL | 1-1180 | Northern Europe, Scandinavia. |
| 101-291 | Denmark |
| 301-398 | Iceland |
| 401-596 | Norway |
| 601-991 | Sweden |
| 1002-1180 | Finland |
| DP | 1-776 | Spain, Portugal. |
| 285-302 | Spain Local History and Description |
| 350-374 | Madrid |
| 501-900 | Portugal |
| 752-776 | Lisbon |
| DQ | 1-851 | Switzerland. |
| 301-800 | Cantons |
| 820-841 | Alps |
| DR | 1-2285 | Balkan Peninsula. |
| 51-98 | Bulgaria |
| 201-296 | Romania |
| 401-741 | Turkey |
| 716-739 | Istanbul |
| 901-998 | Albania |
| 1202-2285 | Yugoslavia |
| DS | 1-937 | Asia. |
| 1-5.9 | General |
| 31-35 | History |
| 35.3-35.8 | The Islamic World |
| 36-39.2 | Arab Countries (including North Africa) |
| 41-66 | Southwestern Asia, Ancient Orient, Near East |
| 67-79.9 | Iraq |
| 80-90 | Lebanon |
| 92-99 | Syria |
| 101-151 | Israel, The Jews, Palestine |
| 133-151 | Jews Outside of Israel |
| 153-154.9 | Jordan |
| 155-156 | Asia Minor |
| 161-199 | Armenia |
| 201-248 | Arabian Peninsula, Saudi Arabia |
| 251-326 | Iran |
| 327-329 | Ancient Western and Central Asia |
| 331-339.9 | Southern Asia, Indian Ocean Region |
| 350-375 | Afghanistan |
| 376-392.2 | Pakistan |
| 393-396.9 | Bangladesh |
| 401-486.8 | India |
| 488-490 | Sri Lanka |
| 493-495.8 | Nepal |
| 498-498.8 | Goa |
| 501-519 | East Asia, The Far East |
| 527-530.9 | Burma |
| 554-554.98 | Cambodia |
| 555-555.98 | Laos |
| 556-560.72 | Vietnam |
| 557-559.8 | Vietnamese Conflict |
| 561-589 | Thailand |
| 591-599 | Malaysia |
| 600-605 | Malay Archipelago |
| 611-649 | Indonesia |
| 651-689 | Philippines |
| 701-799.9 | China |
| 777.545-779.29 | People's Republic |
| 781-784.2 | Manchuria |
| 785-786 | Tibet |
| 798.92-799.9 | Taiwan |
| 801-897 | Japan |
| 901-937 | Korea |
| 930-937 | Democratic People's Republic |
| DT | 1-3415 | Africa. |
| 43-154 | Egypt |
| 154.1-159.9 | Sudan |
| 160-177 | North Africa |
| 179.2-179.9 | Northwest Africa |
| 181-346 | Maghrib, Barbary States |
| 211-239 | Libya |
| 241-269 | Tunisia |
| 271-299 | Algeria |
| 301-330 | Morocco |
| 331-346 | Sahara |
| 348-363.3 | Central, Sub-Saharan Africa |
| 365-469 | Eastern Africa |
| 371-398 | Ethiopia |
| 401-409 | Somalia |
| 411-411.9 | Djibouti |
| 433.2-433.29 | Uganda |
| 433.5-434 | Kenya |
| 436-449 | Tanzania |
| 450-450.49 | Rwanda |
| 450.5-450.95 | Burundi |
| 468-469 | East African Islands |
| 470-671 | West Africa |
| 491-516.9 | British West Africa |
| 509-509.9 | Gambia |
| 509.97-512.9 | Ghana |
| 515-515.9 | Nigeria |
| 516-516.9 | Sierra Leone |
| 521-555.9 | French West Africa |
| 541-541.9 | Benin |
| 543-543.9 | Ghana |
| 545-545.9 | Ivory Coast |
| 546.1-546.19 | Gabon |
| 546.2-546.29 | Congo (Brazzaville) |
| 546.3-546.39 | Central African Republic |
| 546.4-546.49 | Chad |
| 547-547.9 | Niger |
| 548 | West Sahara |
| 549-549.9 | Senegal |
| 551-551.9 | Mali |
| 554-554.9 | Mauritania |
| 555-555.9 | Burkina Faso |
| 561-581 | Cameroon |
| 582-582.9 | Togo |
| 591-615.9 | Portuguese-Speaking West Africa |
| 613-613.9 | Guinea-Bissau |
| 615-615.9 | Sao Tome and Principe |
| 619-620.9 | Spanish West Africa |
| 620-620.9 | Equatorial Guinea |
| 621-637 | Liberia |
| 639 | Congo River Region |
| 641-665 | Zaire |
| 669-671 | Islands |
| 1001-1190 | Southern Africa |
| 1251-1465 | Angola |
| 1501-1685 | Namibia, South-West Africa |
| 1701-2405 | South Africa |
| 1991-2054 | Cape Province, Cape of Good Hope |
| 2075-2145 | Orange Free State |
| 2181-2278 | Natal |
| 2291-2378 | Transvaal, South African Republic |
| 2421-2525 | Botswana, Bechuanaland |
| 2541-2686 | Lesotho, Basutoland |
| 2701-2825 | Swaziland |
| 2831-2864 | British Central Africa, Federation of Rhodesia and Nyasaland |
| 2871-3025 | Zimbabwe, Southern Rhodesia |
| 3031-3145 | Zambia, Northern Rhodesia |
| 3161-3257 | Malawi-Nyasaland |
| 3291-3415 | Mozambique |
| DU | 1-950 | Oceania, Australia, New Zealand. |
| 80-398 | Australia |
| 400-430 | New Zeland |
| 490 | Melanesia |
| 500 | Micronesia |
| 510 | Polynesia |
| 520-950 | Smaller Island Groups |
| 620-629 | Hawaii, Hawaiian Islands |
| 739-747 | New Guinea |
| 810-819 | Samoan Islands |
| DX | 101-301 | Roma (Gypsies). |
