The Papers of Max J. Kohler (1871-1934) document his life's work as lawyer, historian, writer, researcher, and defender of Jewish and immigrant rights. Correspondents include many of Kohler's contemporaries in the field of history and immigration law including Cyrus Adler; William Taft; John Bassett Moore; Mortimer Schiff; David Hunter Miller; Baron and Baroness de Hirsch; the Straus Family including Oscar Straus; Luigi Luzzatti; Leon Huhner; and Julian Mack. Subjects include U.S. immigration law, American-Jewish history, Col. Alfred Dreyfus, Haym Salomon, Ellis Island, Rabbi Kaufmann Kohler, the publication God in Freedom, international treaties, and the Peace Conference of 1919.

The Industrial Removal Office was created as part of the Jewish Agricultural Society to assimilate immigrants into American society, both economically and culturally. It worked to employ all Jewish immigrants. The collection contains administrative and financial records, immigrants' removal records, and correspondence. A database has been constructed to search for persons removed by the Industrial Removal Office.