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 Catherine of Russia, by John Courtney, The Old Vic, London, 1850 – 1851 and click the button that will have appeared there.

If they have the exact same name, a search for production of Catherine of Russia, by John Courtney, The Old Vic, London, 1850 – 1851 will probably help.