International Encyclopedia of Dance - Scholarly encyclopedia of just dance topics. Any word typed into this db will be related to dance. Also in hard copy.
Oxford Reference [Sources] Premiere - Performance - collection of scholarly online reference sources on the performing arts, included the IED, above.
Duke Libraries' subject datbase page for DANCE resources - a group of reference sources and databases potentially covering dance
Encyclopedia of Esthetics - scholarly resource for the conceptual side of the arts, excellent for dance backgrounds & theory. This link places you in the Oxford Art Online database, simply select "Encyclopedia of Esthetics".
International Dictionary of Modern Dance. Lilly Reference GV1585.B46 1998
International Encyclopeda of Dance (hardcopy)
Biography Index - Contains more than one million thumbnail biographies from scholarly sources.
Biography and Geneology Master Index - Indexes readily-available biographical reference sources, people from all places, times and occupations. NO DIRECT INFO HERE (a 2-step source to hard-copy sources).
Grove Encyclopedia of Music - scholarly encyclopedia of music and musicians. Includes world music and dances