You can access various electronic resources on trial through Rolfing Library. Please try them, see if they are helpful for your research, and let us know how your experience was!
The Bibliographica Judaica Archive in Frankfurt am Main has spent decades gathering the biobibliographical data of about 20,000 German Jewish personalities. This unique data stock is now available on De Gruyter’s ABJ – German Judaism Online database. This supplementary volume provides an introduction to the history of the archive's origins and to its significance in the history of scholarship.