- A - General
General Encyclopedias, Almanacs
- B - Philosophy, Psychology, & Religions
Also includes Ethics, Logic, and Mythology
- C - Auxiliary Sciences of History
Archaeology, Genealogy, Heraldry, Numismatics (coins & currency)
- D - World History
Histories of Europe, Asia, Africa, Australia, New Zealand, etc.
- E & F - History of the Americas
USA, Canada, Latin America & the Caribbean
- G - Geography, Anthropology
Also includes Folklore, Environmental Sciences, Leisure/Recreation, Oceanography
- H - Social Sciences
Business, Demography, Economics, Sociology, Statistics
- J - Political Science
Colonies/Colonization, Government, International Law, Political Institutions, Public Administration
- K - Law
Also includes Religious Law
- L - Education
All aspects of Education from history of to practice at all levels
- M - Music
Compositions, History and Literature of Music, Instruction and Study
- N - Fine Arts
Architecture, Decorative Arts, Design, Drawing and Painting, Sculpture, Visual and Print
- P - Language and Literature
Classical and Modern Languages, Literature, Poetry, Philology/Linguistics
- Q - Sciences
Including all the Natural Sciences, Mathematics, Natural History
- R - Medicine
All Medical specialties, Homeopathy, Nursing, Pharmacy, Public Health
- S - Agriculture
Aquaculture/Fishing, Forestry, Hunting, Plant Culture
- T - Technology
Including Arts & Crafts/Handicrafts, Chemical Technology, Construction, Engineering, Home Economics, Metallurgy, Motor Vehicles, Photography
- U - Military Science
Armies: Organization, Maintenance, etc.
- V - Naval Science
Marines, Navies: Organization, Navigation, Shipbuilding
- Z - Bibliography
Books: Industry & Trade, Information Resources, Libraries, Paleography, Writing
