The Library of Congress has announced a transition to online-only publication of its cataloging documentation. As titles that are in production are released, the Library’s Cataloging Distribution Service (CDS) will no longer print new editions of its subject headings, classification schedules and other cataloging publications. The Library will instead provide free downloadable PDF versions of these titles.
For users desiring enhanced functionality, the Library’s two web-based subscription services, Cataloger’s Desktop and Classification Web, will continue as products from CDS.
From American Libraries Direct, 6/26/2013