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 Doctor Knock, by Jules Romains, Royalty Theatre, Dean Street, London, 27^th April – 29^th May 1926 and click the button that will have appeared there.

If they have the exact same name, a search for production of Doctor Knock, by Jules Romains, Royalty Theatre, Dean Street, London, 27^th April – 29^th May 1926 will probably help.