The bulk of the collection consists of materials pertaining to the Friedlander/Friedlaender families, descendents of the prominent banker and member of the Prussian House of Lords, Dagobert Friedlaender (1826-1904) from Kolmar, Posen (Chodzież, Poland). Also included are correspondence and other materials, documenting the efforts of Frieda Friedlander to assist the work of OSE in France and in the United States after World War II.