"Joseph Haydn", article in the New Grove. Further reading Péter Esterházy, "Harmonia caelestis" (2001), Magvető External links Official website of the Esterházy family's museums Website of the Esterházy family Esterházy Wiki The official website of Esterházy Betriebe GmbH Portrait of Prince Paul Anton III (1786–1866) Book review of Die Fürsten Esterhàzy: Magnaten Diplomaten and Mäzene