Theater arts article databases
Arts & Humanities Search indexes more than 1,300 leading arts and humanities journals
Humanities International Index a comprehensive database covering journals, books and other important reference sources in the humanities.
Others to consider:
Academic Search Elite (Ebsco) Interdisciplinary index to 3000 journals, with full text of 1830 of them
Academic OneFile Multidisciplinary coverage of topics in the social sciences, the humanities, education and general science