Dictionaries provide information about words.
Encyclopedias provide general background information; they are a good place to start researching a topic that you know little about.
Directories provide names, addresses, affiliations, etc. of people, organizations, or institutions.
Biographical dictionaries contain short articles about people’s lives.
Geographic information is located in atlases and maps.
Almanacs contain statistics and facts about countries, events, personalities, or subjects.
Handbooks and manuals are subject are tools. Handbooks provide facts, terms, concepts, movement, etc. of a topic. Manuals provide detailed instructions on a particular subject, such as how to do something or how something works.
Bibliographies lead to other information sources. They are lists of books and other materials that provide author, title, and publication information. Annotated bibliographies also include a brief description or summary of the item.