Here are all of the Gilbert and Sullivan Operas in order (with the date they opened):
- Thespis (1871)
- Trial by Jury (1875)
- The Sorcerer (1877)
- H.M.S. Pinafore (1878)
- The Pirates of Penzance (1879)
- Patience (1881) - the first of the Savoy Operas
- Iolanthe (1882)
- Princess Ida (1884)
- The Mikado (1885)
- Ruddigore (1887)
- The Yeomen of the Guard (1888)
- The Gondoliers (1889)
- Utopia Limited (1893)
- The Grand Duke (1896)
http://diamond.boisestate.edu/gas/
http://www.doylycarte.org.uk