Official Website

Official Website for 2015 UK Concert

Lucille Lortel Archives (Original)

Playbill Vault(Broadway Premiere)

Lucille Lortel Archives (1988 Off-Broadway Revival)

Lucille Lortel Archives (2000 Off-Broadway Revival)

Playbill Vault (2011 Broadway Revival)

Stephen Schwartz’s Official Website

IMDB page for film adaptation

Twitter account for 2011 Broadway Revival