Reference sources can be helpful when you need background information or an introduction to a topic. Search the Local Catalog to find other reference works, including print sources. Try using words like "encyclopedias," "dictionaries," and "bibliographies" with your topic. For example, search Oklahoma encyclopedias.
Directory. Includes Who's Who in America, Who's Who in the World, Who's Who in American History, Who's Who in American Art, Who's Who in American Politics, Who's Who in Science and Engineering, Who's Who in Medicine and Healthcare, Who's Who of American Women, and Marquis Biographies Online.