"The lack of a satisfactory classification scheme for the average Jewish library has long been a problem to the Jewish librarian. Many solutions have been suggested and attempted, with varying degrees of success. The classification scheme of the Library of Congress, which has now been adopted by most of the great scholarly Jewish libraries of the country, suffers from the drawbacks of being unknown to most of the general public. On the other hand, the Dewey Decimal System as it stands, although familiar even to school children, presents certain difficulties when applied to a specialized collection. The excessive subdivision required in certain numbers, the lack of provision for certain subject areas which do not fit satisfactorily into the Dewey system, are drawbacks which librarians in the Jewish field have long struggled with. It was to meet these objections that the author devised the present scheme. Although based upon the Dewey system, certain areas have been drastically revised, most notably in the fields of religion, Jewish education, and history. In every case, whether or not explicitly stated, the number refers only to the Jewish aspect of the subject in question. Since the scheme is intended only for Judaica collections, the letter 'z' has been added throughout, to distinguish it from the regular Dewey system. This will be useful in the case of librarians with 'mixed' collections, i.e., containing books of a general as well as of a Jewish nature. This classification scheme is intended primarily for a small Judaica library, such as one in a synagogue or school. Very large or very scholarly collections will probably find the Library of Congress classification more suited to their needs."