Diplomacy adapted from ?Dora? by Victorien Sardou (5 September 1831 ? 8 November 1908) at the Theatre du Vaudeville, Paris, on 22nd January 1877, by Clement Scott (6 October 1841 ? 25 June 1904) and B. C. Stephenson (1839 ? 22 January 1906). It was first produced in London at the Prince of Wales Theatre on 12th January 1878. This is for the revival at the Adelphi Theatre on 8th March 1924. The photo is of Dame Gladys Cooper (18 December 1888 ? 17 November 1971), who starred in this production.