- Letters between the offices of the company, the Sadler's Wells Theatre and the Old Vic Theatre regarding the D'Oyly Carte seasons held at both venues.
- Letters between Rupert D'Oyly Carte, Richard Collet and Lilian Baylis.
- Typed copy of an 1948 agreement, finance and seating returns information, season flyers and related ephemera.
- Copy of A National Theatre by Harley Granville-Barker (signed by Lilian Baylis and Bruce Worsley, former manager of the Old Vic). This volume was donated to the company in 1957. Related donor correspondence may be found in THM/73/14/10.