The subseries "Family" is extensive. It contains three folders of miscellaneous materials pertaining to Meyer's family history, including narratives written by various family members, correspondence discussing family history, newspaper announcements, and records from Germany. Most, but not all, of this material is in German. Also included in this subseries are many family trees that go back several generations. The majority of this subseries, however, is comprised of correspondence between family members and family friends, from 1916 to 1995. This correspondence is arranged chronologically by year at the folder level and by date (whenever possible) within each folder, most heavily spanning the years 1936 to 1945. Most are handwritten or typed originals or carbon copies, and most writings prior to 1939 are written in German, with the use of English increasing after 1939. Correspondents include Meyer's parents, Dr. Gustav and Therese Meyer, uncle Dr. Max Meyer, cousin Rudolf Meyer, brothers Rolf and Hajo Meyer, family friends Julius and Max Reinhaus, and others, and subjects include updates on employment and living situations, news from relatives, and Meyer's attempts to aid Rudolf Meyer in emigrating to the United States from England. A photocopied memoir written in German by Meyer's grandfather, Julius Melchior, provides additional information about the family's background. Family photographs are included in the series, dating from the mid-19th century to the mid-1970s, including photographs that document the family's service in World War I. Some, but not all, of these photographs are identified.