Correspondence with various societies and organisations of which MS was a patron or trustee, mainly various Churchill-related bodies, and also the National Theatre, where MS served as Chairman, 1989-95.

Subjects include: congratulations to actors and directors on various productions; cuts to the guest night list; thanks to supporters; invitations; the Rayne Award; the Gala performance of Carousel; the American tour of Richard III; the Theatre's Arts Council funding; the Olivier Awards.

Subjects include: criticism of the process for selecting a new Director of the National Theatre; MS's departure from the Chairmanship; membership of the Board; the 'Masterplan' for changes to the theatre; the Rayne Award; the exhibition of the Somerset Maugham collection of theatrical paintings; fundraising; congratulations to actors and directors on various productions.

Correspondence with various societies and organisations of which MS was a patron or trustee, mainly various Churchill-related bodies, and also the National Theatre, where MS served as Chairman, 1989-95.

Correspondence and papers relating to the National Theatre after MS had stepped down as Chairman, but remained a trustee of the National Theatre Foundation. Includes extracts relating to MS from a history of the National Theatre by Daniel Rosenthal.

Includes letters between Richard Eyre [Artistic Director of the National Theatre] and Sir [Arthur] John Gielgud on his 90th birthday.

Black-and-white photographs, presented to MS to mark her retirement at Chairman of the Royal National Theatre Board. Includes a covering letter from Richard Eyre, Artistic Director.

Papers and correspondence on MS's visit to the Market Theatre, Johannesburg, with a group from the National Theatre Studio, Sept-Oct 1994.