Correspondence primarily between members of the Sommer family. Of special interest is a letter written by Eduard Höpken on May 29, 1965 revealing that he was a dedicated member of the Social Democratic Party of Germany since 1930. Eduard claimed that he reinstated his support for the political party after 1945. In this letter, Eduard wrote about the development of laws to provide the state increased control during emergencies. Also contains correspondence between the Sommer family and Friederich Joachim. Friederich Joachim adopted Ulrich Sommer as an adult and he lived in Germany. Records include letters, post cards, birth announcements, and a funeral invitation.