Collection of dictionaries and encyclopedias includes: Dictionary of World History, Encyclopedia of the Enlightenment, Oxford Encyclopedia of the Modern World, Oxford Encyclopedia of Women in World History.
Reference resources are a good place to begin your research. They can help you:
There are still many specialized print encyclopedias and dictionaries, such as the Oxford titles, in Stauffer Reference. Search Omni by title to find the call number.
Search Omni using Keyword Boolean - e.g. (drama or theater or "performing arts") and dictionaries - to find print or electronic reference sources on your topic, or consult individual Subject Guides for suggestions:
Drama Guide for: dictionaries, biographies, plays, criticism, reviews