Arts and Humanities Citation Index. Philadelphia: Institute for Scientific Information, 1978–. An interdisciplinary index to articles in more than 1,100 periodicals, searchable by author, keyword, and cited work. Providing citations and descriptive abstracts, this index is available in print and electronic formats. It may be available at your library as AHSearch (through the FirstSearch database collection) or as part of the Web of Science database.

Humanities Index. New York: Wilson, 1974–. An interdisciplinary index to about 400 of the most prominent English-language journals in the humanities, including art, music, history, and literature. Searchable by author or subject, the index includes many cross-references and subheadings that break large topics into components. This index is available in print and electronic formats; in some libraries, the database includes full text of selected articles.

Electronic Text Centerhttp://etext.lib.virginia.edu A vast collection of electronic texts, in 12 languages, digitized by the University of Virginia Library. It is possible to search hundreds of texts at once by keyword and to download texts to your computer. The site includes links to other electronic text collections on the Web. (Some texts are available only to University of Virginia students and staff.)

The Online Books Pagehttp://digital.library.upenn.edu/books Provides links to over 20,000 full-text books and journals in English and allows searching by author and title. The site includes special exhibits on women writers, banned books, and prize winners. It is edited by John Mark Ockerbloom at the University of Pennsylvania.

Voice of the Shuttlehttp://vos.ucsb.edu A wide-ranging index to sites of interest to researchers in humanities disciplines — art, literature, philosophy, religion, and cultural studies — with links to higher education and publishing sites. The site is maintained by Allen Liu and others in the English Department at the University of California, Santa Barbara.

The Humanities: A Selective Guide to Information Sources. By Ron Blazek and Elizabeth Smith Aversa. 4th ed. Englewood: Libraries Unlimited, 2000. A guide to research tools in the humanities, including the arts, philosophy, religion, and language and literature. A critical annotation is provided for each source listed.

New Dictionary of the History of Ideas: Studies of Selected Pivotal Ideas. 6 vols. New York: Scribner, 2004. Covers concepts in intellectual history, with long, scholarly discussions of important ideas. An update of a 1974 classic, this revised work includes global perspectives in over 750 articles and is available in electronic format.