Background sources can provide a framework or organizer for a topic. These sources are often found in books such as encyclopedias, handbooks, and bibliographies appearing in articles. Online sources such as websites are also background information sources. Definitions, overviews, biographical information, key terms, and authorities in a field are useful in constructing searches and finding information for further research.
CREDO REFERENCE, a library database, is an excellent place to search for background information on many topics.