Obtaining Cataloging Information from Other Sources
There are a number of ways to obtain cataloging for books and the other items in your library. The first place to look is in the book for the CIP—cataloging in publication, which can be copied onto paper or digital format. The web has made obtaining free cataloging very easy.
The Library of Congress's MARC (Machine Readable Cataloging) records, available from their online catalog, may be downloaded directly into many library automation systems. Services such as OCLC and Marcive, Brodart, and local library consortia, can provide cataloging in both paper and digital format for a fee.
A free system which can be used to catalog very small collections is at Librarything.com

Many Judaica libraries have made their catalogs accessible online. AJL provides links on its website to many members' catalogs to facilitate copy cataloging. For new books, library vendors such as Baker & Taylor, Follett and Brodart, will provide cataloging for an additional fee with your purchase.
If you purchase software capable of z39.50 searches, you will be able to download cataloging directly from some libraries into your library's own automation system. One such product is BookWhere. Automation systems such as OPALS also provide the ability to download records directly from other library catalogs, such as Library of Congress and the Israel Union Catalog.

The cataloging information may also contain classification information, which is not the same thing. A quick distinction is that cataloging describes an item, while classification organizes its placement within the collection, summed up as "what" vs. "where." Classification systems include the Dewey Decimal System, Library of Congress, Weine, and Elazar. See the page on Classification for SSC Libraries for an in-depth discussion of classification systems.
The Central Cataloging Service (Sinai Temple Blumenthal Library) helps Judaica librarians and lay people who need to catalog books into the Elazar classification systems.

Cataloging Principles presented by Rachel Glasser at the 2003 AJL Convention.
Organizing, Classifying & Cataloging Your Library presented by Rachel Kamin at the 2004 AJL Convention as well as her additional presentation at the 2005 Convention.
Transliterating Hebrew
The Library of Congress has a romanization chart for transliterating Hebrew characters into Latin letters. Additional information about Hebrew cataloging issues is available from Rachel Simon, who, in collaboration with Paul Maher and Joan Biella, has created a useful Hebrew cataloging resource.