Isidore Singer 
Jewish Encyclopedia [PDF ebook] 
A Descriptive Record of the History, Religion, Literature, and Customs of the Jewish People From the Earliest Times to the Present Day

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. President of the American Jewish Historical Society Librarian, Smithsonian Institution, Washington, D. C.