Arthur Sullivan 
The Complete Plays of Gilbert and Sullivan [PDF ebook] 

William S. Gilbert and Sir Arthur Sullivan collaborated on 14 operas in the period from 1871 to 1896.
From Trial by Jury to The Pirates of Penzance: the complete librettos of all fourteen Gilbert and Sullivan operas.
Gilbert’s verses for Sullivan’s music are the most fastidiously turned and inventively rhymed in all lyric comedy. As the Savoy Operas enter their second century on a swell of renewed popularity, Gilbert’s reputation as the supreme wordsmith of light opera remains secure.
Contents
The gondoliers — The grand duke — H.M.S. Pinafore — Iolanthe — The Mikado — The pirates of Penzance — Princess Ida — Ruddigore — The sorcerer — Thespis — Trial by jury — Utopia, Limited — The yeomen of the guard — Patience.