A collection of prints, photographs, pamphlets, clippings, playbills, and programs dealing with the theater, chiefly American and English, in all its aspects including drama, opera, dance, movies, puppets, and spectacles. The majority of the material documents the 19th century.

Office files consisting of correspondence, reports, memoranda, and other documents relating to the operation of the Museum. Included are numerous biographical and topical folders on the theatrical subjects such as David Belasco, Costumes, French stage models, Helen Hayes, etc. Masks and Puppets account for 29 folders.