Listed below are the letters and titles of the main classes of the Library of Congress Classification. Click on any class to view an outline of its subclasses in an interactive PDF format. This list is based on the Library of Congress Classification Outline.
B -- Philosophy, Psychology, Religion
C -- Auxiliary Sciences of History
G -- Geography, Anthropology, Recreation
Below are key reference books that provide a general overview of a topic or help identify synonyms, related terms, or basic data. These sources often include references and lists of further readings.