 The microfilmed collections of the National Library of Israel in Jerusalem contain several of these manuscripts or microfilm manuscripts from other libraries.In his work on Kabbalah in North Africa since the 16th c., Moshé Hallamish mentioned Isaiah Bakish.In his "Shorshei Hashemot" the Italian Kabbalist Moses ben Mordecai Zacuto included long quotations of the R' Isaiah Bakish (16-17th c.).