Secondary Sources

Finding primary sources in the Theatre Collection sometimes requires using secondary sources to find out more information about the people, productions, organizations and venues that you're researching. A selection of useful resources is listed here.

Production Databases

Internet Broadway Database (IBDB): Information about production runs, cast and crew, venues, awards and nominations, attendance and grosses, etc.

Playbill Vault: Information on over 10,000 Broadway shows, actors, and production crews (1930-present): search by title, person, theatre, or season. Includes digitized program images.

Internet Off-Broadway Database: This website, also known as the Lortel Archives, purports to catalog all shows ever produced Off-Broadway. 

Biographical Dictionaries and Indexes

The following print resources are available in the Houghton Library Reading Room.


Oxford Encyclopedia of Theatre and Performance: Articles on theatrical concepts, theories, and critical approaches, actors, playwrights, directors, designers, company managers, and critics. Harvard ID required for access.

International encyclopedia of dance: Covers the full spectrum of dance—theatrical, ritual, dance-drama, folk, traditional, ethnic, and social dance. Cultural and national overviews are accompanied by entries on dance forms, music and costumes, performances, and biographies of dancers and choreographers. Harvard ID required for access.