Who's who in the Theatre - Google Books

http://books.google.de/books?id=M7tZAAAAYAAJ&q=%22Bernard+Horsfall%22&dq=%22Bernard+Horsfall%22&hl=de&sa=X&ei=lHsIUYePBMnEtQbY0I

Issues for 1914-67 include "Notable productions and important revivals of the London stage from the earliest times."