Library Catalogs online
- Bibliothèque nationale de France
- Jewish Theological seminary of America
- New York Public Library
- Harvard Hollis
- Stanford University
- Jewish Public Library (Montreal)
- Jewish National and University Library (Jerusalem)
- Rambi
- Union list of Israel
- Bar Ilan University
- Bodleian Library (Oxford)
- Oxford Centre for Hebrew and Jewish Studies Library
- Universität Frankfurt am main- catalogue judaica
- Universitätsbibliothek Frankfurt am Main - Yiddish prints