Searchable contents of many reference ebooks, including Cambridge Guide to Theatre, Cambridge Encyclopedia of Actors and Acting, Oxford Companion to Theatre and Performance. Be selective, as it also includes non-theater and superficial sources that aren't useful for your assignment.

Series of guides offering introductions to major writers, artists, philosophers, topics, and periods. Essays are written by leading experts in the field. Includes the Cambridge Companion to Theatre History and several volumes on topics such as African American Theatre and individual dramatists.