In October 2005, the U.S. Government Printing Office (GPO) and Library of Congress Cataloging Distribution Service (CDS) investigated options for electronic dissemination of CDS cataloging publications to Federal depository libraries. At the spring 2005 Depository Library Council Meeting in Albuquerque, GPO staff demonstrated the e-LCSH—a PDF version of the Library of Congress Subject Headings, 28th edition. Federal Depository Library Program (FDLP) partners were then invited to review the e-LCSH and provide feedback by answering a brief survey on the value of LCSH in that format.
The survey results were later shared with CDS for the purpose of assessing the viability of this delivery mechanism and for identifying potential product improvements.
Since the completion of the survey, Library of Congress lists new and changed subject headings on a weekly basis.