The National Book League was a precursor to the current Booktrust, and was set up in 1924 by the Society of Bookmen in order to promote reading, particularly among the young. To that end, the NBL issued Reader's Guides on a variety of subjects, each written by an author with expertise in that field and containing an annotated bibliography of recommended titles on the subject. First published in 1955, this guide by British actor Alec Clunes, father of Martin, includes a bibliography not only of British theatre in general, but also histories of individual theatres in Britain, biographies of theatrical figures and books on acting technique.