Belasco, who wrote the screenplay; Sigmund Romberg wrote songs for this film. Notes and references Notes References Cited sources Other sources Holden, Amanda (ed.) (2001). The New Penguin Opera Guide. New York: Penguin Putnam Warrack, John and West, Ewan (1992). The Oxford Dictionary of Opera. New York: Oxford University Press External links Libretto (Italian, Russian) fanciulla100.org, an educational website dedicated to the opera's centenary Retrieved 26 October 2010 "Puccini and New York", lecture by Professor Roger Parker on the opera, given at Gresham College on 11 June 2007 (with video and audio files available for download). Operas by Giacomo Puccini Italian-language operas Operas 1910 operas Verismo operas Opera world premieres at the Metropolitan Opera Operas based on plays Operas set in the United States California Gold Rush in fiction