The archives and library of the YIVO Institute for Jewish Research contain the world’s largest and most comprehensive collection of materials on Eastern European Ashkenazi Jewish history and culture. They include a wealth of sources for genealogical research. YIVO archivist Hallel Yadin will review the different kinds of documents available at YIVO, including pre-war community records, immigration case files, yizkor books, landsmanshaftn records, and more. She will also discuss how to effectively search YIVO's online catalogs and how to access its holdings remotely.