Thanks for helping improve the accuracy of the site. We’ve noted what item you were on; please now visit the web page of the duplicate of production of Henry IV, Parts I & II, by William Shakespeare, Theatre Royal, Drury Lane, London, 1818 – 1819 and click the button that will have appeared there.

If they have the exact same name, a search for production of Henry IV, Parts I & II, by William Shakespeare, Theatre Royal, Drury Lane, London, 1818 – 1819 will probably help.