The research archive collects materials on Gerhart and Carl Hauptmann, Silesia, the poetry circle of Friedrichshagen, and the literary environment surrounding the Hauptmann brothers. The archive edits these materials and provides them to the public. Its tasks include: supporting research and teachings at universities and colleges, providing services for theatres and information to press, publishers, libraries, schools and cultural institutions, as well as guidance and literature for professional and other interested readers.

The fund divides itself in the following groups:

- The library, which holds around. 7000 books: Gerhart Hauptmann’s works, including rare editions almost in their entirety, many first editions, secondary literature about the poet’s life and work, books about and by Carl Hauptmann and his work, books on the history of literature and theatre, and about the performing arts.

- The collection of books and pictures on the intellectual surroundings of Gerhart Hauptmann’s life and work include a Silesian collection and one on the Friedrichshagen poetry circle.

- The newspaper archive includes many articles about the beginning of the Hauptmann criticism up until today.

- The picture archive includes over 800 photographs, among them, many original photos from the family estate.

- The Theatralia collection archives programmes and stab lists of the performances, portraits and still photographs, and existing posters and stage design drafts of many pieces.

- The partial estates of J.M. Avenarius und Ch. E. Pauly

- The professional journal collection including complete volumes of the magazines „Sinn und Form“, „Weimarer Beiträge“, „Marginalien“ and „Theater der Zeit“ (all from the former DDR) between 1981-1990.

-  The art collection around 1000 impressions of Gerhart Hauptmann and his artwork such as paintings, graphics and sculpture.