Edward Henry Gordon Craig (1872-1966) was a member of the Lyceum, London, where he received training as an actor and began his career in stage design and production (1889-95). He was appointed Royal Designer for Industry of the Royal College of Art (1938), made a Companion of Honour (1958) and was appointed president of the Mermaid Theatre, London (1964).

Edward Hesketh Gibbons Pearson (20 February 1887 – 9 April 1964) was a British actor, theatre director and writer. This collection of manuscripts consists of the holograph notebooks he kept for several of his biographies as well as some miscellaneous research notebooks.

The David Shepherd (1924-2018) Papers consists of 36 boxes and 24.1 gigabytes of born-digital files containing materials related to his work in improvisational theater.

Konstantin Sergeevich Stanislavskii (né Alexeev), one of the central figures in 20th Century theatre, was an actor, director, producer and theorist of acting. The archive is comprised of ~65 handwritten letters from Stanislavskii to Elizabeth Hapgood, 6 telegrams and 3 typed letters.