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Search hundreds of dictionaries and encyclopedias in one place.
Credo is an online reference service featuring 551 full-text reference titles from over 70 publishers. Other features include: -Dynamic table functionality for world state and county statistics, an interactive world atlas, flash animations, videos, poetry/literature readings, over 700 music files, and a concept map. -More than 200,000 images from all subject areas, over 200,000 audio pronunciations, and a citation formatter in APA, MLA, and Chicago formats for all articles.
Explore the vast collection of the Library of Congress, including artifacts and information on theatre, music and dance in the United States and beyond.
Dictionary of the Theatre by 
The Dictionary of Theatre Anthropology by 
The Oxford Companion to American Theatre by 
Encyclopedia of the Musical Theatre by 