Updated quarterly (until completed). A comprehensive reference work covering all aspects of the Canadian and American Theatre. Includes some 40,000 pages of major reference materials, together with records to more than 30,000 plays (many never published previously), over 57,000 people, 5,400 theatres, nearly 22,000 productions and 2,500 production companies. It also includes over 40,000 pages of reference sources in electronic format, including Annals of the New York Stage, and the American Theatre Companies series. Thousands of posters, playbills, and photographs are also included, as well as links to plays and related Web sites.