Keywords: Mignon (opera) 1866 poster NGO3p383.jpg Jules Chéret for the 1866 premiere of the opera Mignon by Ambroise Thomas User scan of Sadie Stanley ed 1992 The New Grove Dictionary of Opera 3 383 London Macmillan ISBN 9781561592289 1866 Creator Jules Chéret PD-old-auto 1932 Jules Chéret Mignon 1866 theatre posters |