Background
Reisen was born in Koydenev (now known as Dzyarzhynsk) in Minsk Governorate (in present-day Belarus) in 1887 to parents interested in the Jewish Enlightenment, or Haskalah. His father wrote poems in Hebrew and Yiddish.
Reisen was born in Koydenev (now known as Dzyarzhynsk) in Minsk Governorate (in present-day Belarus) in 1887 to parents interested in the Jewish Enlightenment, or Haskalah. His father wrote poems in Hebrew and Yiddish.
He was educated at home, at several different cheders in the area, and attended a Russian state school in Minsk.
In 1915, he moved to Vilna, where he would become an active part of the Yiddish intellectual scene as a writer and publisher. This reference work centralized biographical and bibliographical information on Yiddish writers, providing an invaluable resource to scholars. He gathered information through an ambitious campaign of questionnaires published in newspapers and through word of mouth, in an era of unreliable communication.
He continuously refined and improved his work, including more and more writers and improving the accuracy of the information through the years.
This work served as the basis for the fun der nayer yidisher literatur, which remains one of the definitive reference works in the field In February 1925, Reisen organized a conference with Max Weinreich to discuss Nochum Shtif"s recent call for a Yiddish institute of higher education.
The conference enthusiastically endorsed the idea, and that date is generally accepted as the founding moment of Reisen would remain active in the organization, acting as an editor of its scholarly journal, the -bleter, from 1931-1939, and mentoring students in its Aspirantur program, which provided advanced graduate training to students of Jewish studies. He traveled to the United States in 1930 and to Argentina in 1932 to raise money and support for the organization.