The collection consists primarily of correspondence reflecting Calmenson’s involvement in numerous national and local Jewish organizations. The largest quantity of materials is in relation to his work with the United Palestine Appeal (1926-1945, primarily 1926-1929), and the Zionist Organization of America (1919-1952). Among the local St. Paul Jewish organizations, the largest quantity of materials relates to the Emergency Committee for Palestine (1942-1951), and the Zionist Organization of America, St. Paul Chapter (1918-1950). Among his correspondents are Harry S. Truman, H.V. Kaltenborn, and Emanuel Neumann. Among the topics dealt with are the 1929 riots in Palestine, the protest against the Passfield paper, and the establishment of a Jewish army after World War I. The collection also contains materials relating to Calmenson’s private activities, and miscellaneous writings and papers belonging to the Calmenson family.

The Lithuanian Jewish Communities Collection is comprised of documents relating to Jewish cultural, religious, social, political, and economic life in approximately 150 towns in Lithuania. The bulk of the collection pertains to the period between 1919 and 1926, when elements of a system of Jewish national autonomy existed within the Lithuanian state, including a Ministry of Jewish Affairs and governmentally empowered Jewish community councils. Smaller parts of the collection relate to the periods before (1860-1918) and after (1927-1940) the autonomy.

This collection contains the records of the Union of Jewish Student Associations in Germany (Yiddish: Farband fun di Yidishe Studentn Fareynen in Daytshland; German: Verband Jüdischer Studentenvereine in Deutschland), an umbrella organization of associations of East European Jewish students who were pursuing their education in cities throughout Germany in the 1920s. Along with the Union's records are the records of two of its affiliate associations, the Jewish Student Association in Berlin and the Jewish Student Association in Jena. The student associations and the umbrella organization that they founded aimed to further Jewish cultural life among members; to provide material assistance to members in need; and to advocate for the interests of members vis-à-vis state and academic authorities. Included are administrative records such as bylaws, minutes, and announcements; materials documenting membership meetings of the Berlin association and conferences of the umbrella organization; petitions and correspondence from members concerning financial aid; materials documenting libraries maintained by the students, and other activities; and general correspondence. Among the correspondents are Jewish charitable and social-welfare organizations that contributed to the support of East European Jewish students through the student associations, including the Yidishe Velt-Hilfs-Konferents (Conférence Universelle Juive de Secours, Paris), the Verband der Russischen Juden, the Hilfsverein der Deutschen Juden, and the Zentralwohlfahrtsstelle der Deutschen Juden, as well as the Jewish Community of Berlin, and Jewish communities in other cities in Germany. The collection also includes a relatively small amount of materials of mixed provenance documenting the activities of other associations and umbrella organizations of East European Jewish students, both in Eastern Europe and the West, the greatest portion related to interwar Poland, especially Vilna.