This collection primarily contains original and reprographic architectural records, photographs, correspondence and personal and professional records related to the design, construction, and ownership of the Haus Cramer in Dahlem, Berlin, Germany, designed by German architect Hermann Muthesius in 1911-1913 for Hans and Gertrud Cramer, with later additions by Muthesius and other architects. A significant portion of the collection also documents the Cramer family's efforts to obtain restitution after World War II for the seizure of the house in the 1930s. Also included are records documenting the restoration and reuse, an effort led by noted architectural historian Julius Poesner.