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Library of Congress Subject Areas (39659)
- A General Works (88)
  - AC Collections. Series. Collected works (49)
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  - AS Academies and learned societies (General) (25)
- B Philosophy. Psychology. Religion (5)
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- D History General and Old World (3)
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- E History America (2)
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- F History United States, Canada, Latin America (1)
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- G Geography. Anthropology. Recreation (214)
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- H Social Sciences (16332)
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- J Political Science (1444)
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- M Music and Books on Music (2)
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- N Fine Arts (48)
  - N Visual arts (General) For photography, see TR (23)
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- Q Science (6893)
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- R Medicine (19)
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- S Agriculture (3503)
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- T Technology (10890)
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- U Military Science (12)
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- Z Bibliography. Library Science. Information Resources (882)
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