This collection contains papers, photographs, costumes and ephemera belonging to Marjorie Whitney Prass. Most of the paper part of the collection consists of programs from dance performances in Chicago but there are also choreography notes for many dances, and a series of photographs of Prass. The bulk of the collection, though, is comprised of over 200 pieces of costume clothing, accessories and props. There are both theatrical and dance costumes, many of them ethnic or folk costumes. The collection also contains parts of costumes, scarves, shoes, headpieces, hair flowers, and other accessories, as well as castanets, bells, and tambourines. The majority of the costumes were made for Prass by her mother, Mathilde Muller Whitney, for performances at the University of Chicago. Most items date from the 1930s and 1940s, with most costume pieces from the 1930s.