The Library of Congress subject headings system was originally designed as a controlled vocabulary for representing the subject and form of the books and serials in the Library of Congress collection, with the purpose of providing subject access points to the bibliographic records contained in the Library of Congress catalogs.
The Library of Congress subject headings system is a tool for subject indexing of library catalogs in general. A subject heading may consist of one or more words. A one-word heading represents a single concept, whereas a multiple-word heading may represent a single concept or multiple concepts.
Authors:
NT: narrower topic. African American Authors
More specific topics. If there are too many books under the main heading, consider using these narrower headings.
RT: related topic. Literature
Associated headings that fall outside of the main term's class structure.
SA: see also. Bio-bibliography
Headings that cover similar subjects.
UF: used for. Writers
Learning to use this book will help make it easier to find subjects on the same or similar topics.
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