The first part of the collection consists mainly of the correspondence between Hulda Schottländer and Dr. Moritz Schwerin, mostly during the period of their engagement in the years 1840-1843. Hans Schwerin, the couple’s grandson, transcribed most of the letters in the 1940s. Further transcripts of letters which did not survive are also included. The second part of the collection documents the life and fate of Hans Schwerin's family, in particular of his son Ernst. Additional documents, photographs and objects pertain to members of the extended family, in particular the Heinersdorffs and Freudenbergs.