| A |
For works too general to be classed with any particular subject |
| AE |
Encyclopedias (General) |
| AI |
Indexes (General) |
| AY |
Yearbooks, Almanacs, Directories |
| |
|
| B |
Philosophy, Psychology, Religion |
| B-BD |
Philosophy, Logic |
| BF |
Psychology |
| BH-BJ |
Aesthetics, Ethics |
| BL-BX |
Religion |
| |
|
| C |
Auxiliary Sciences of History |
| CB |
History of Civilization and Culture (General) |
| CC |
Archaeology (General) |
| CT |
Biography (General) |
| |
|
| D |
History: General and all areas except North & South America |
| DA-DR |
England and Europe |
| DS |
Asia |
| DT |
Africa |
| DU |
Oceania (South Seas) |
| |
|
| E |
History: United States |
| |
|
| F |
History: US Local History, Canada South America |
| |
|
| G |
Geography, Anthropology, Recreation |
| G-GF |
Geography, Oceanography |
| GN-GT |
Anthropology, Prehistoric Archaeology, Folklore |
| GV |
Recreation, Physical Education, Dance |
| |
|
| H |
Social Sciences (General) |
| HB-HC |
Economics |
| HD |
Management, Land Use, Industry, Labor |
| HE |
Transportation, Broadcasting |
| HF |
Commerce, Marketing, Accounting |
| HG |
Finance, Insurance, Investments |
| HJ |
Government Finance |
| HM-HX |
Sociology |
| HV |
Social Work |
| |
|
| J |
Political Sciences |
| J |
Official Documents |
| JC |
Political Theory |
| JF |
Constitutional History and Administration |
| JK-JO |
Government of Countries |
| JS |
Local Government |
| JX |
International Law |
| |
|
| K |
Law |
| KF |
Law of the United States |
| KFC |
Law of Colorado |
