Prof. Simcha Emanuel, professor in the Department of Talmud at the Hebrew University of Jerusalem and member of the Israel Academy of Sciences and Humanities. His main field of research is the Halachic literature in the Middle Ages. Among his publications are the books Newly Discovered Geonic Responsa and Writings of Early Provençal Sages (Jerusalem and Cleveland 1995); Derasha for Passover of R. El'azar of Worms (Jerusalem 2006); Fragments of the Tablets: Lost Books of the Tosaphists (Jerusalem 2006); Responsa of Rabbi Me'ir of Rothenburg and his Colleagues (Jerusalem 2012); Hidden Treasures from Europe (Jerusalem 2015-2019).