American Library Association
Government Documents Round Table

Cataloging Committee
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GPO PURL Alert, 2000-2002

PURL (text file) updates for 2002
January February March
April May June (no data)

PURL (text file) updates for 2001
January February March
April May June
July August September
October November December

PURL (text file) updates for 2000
January February March
April May June
July August September
October November December

Periodicals Supplement (2000 annual)
This file contains the PURLs that GPO has added to the records used to produce the annual Periodicals Supplement to the Monthly Catalog of United States Government Publications.

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Purpose: The GPO PURL Alert was created to give libraries using GPO cataloging records, but not receiving updated or corrected versions of previously distributed GPO records through subscription, an easy way to add GPO PURLs to their catalogs. To meet this need, the GODORT Cataloging Committee offered the GPO PURL Alert. From January 2000 through May 2002, the GPO PURL Alert provided monthly lists of GPO Cataloging records which have had PURL information added to the 856 field. Using GPO PURL Alert lists in electronic format allowed libraries to cut and paste the PURLs into their local catalogs.

GPO Cataloging Practice: Current procedure at GPO when assigning a PURL is note the original URL in a 530 or 538 field and enter the PURL and any necessary notes in the 856 field. The URL is placed in the 530 field if the record is for tangible paper and electronic versions. The 538 field is used if the title is cataloged as an electronic resource title. Electronic resource titles in the time period covered by the GPO PURL Alert usually received Superintendent of Documents Classification numbers containing an accession number, (i.e. C 61.2:97019096) instead of a cutter (i.e. C 61.2:AE 8/2) following the stem.

Source of Records/Reports: GPO PURL Alert reports were generated from vendor-supplied data, and may not replicate the exact monthly output from GPO as posted in the SPCMOCAT file. Generally, however, a GPO PURL Alert report for any month will contain data from the preceding month; thus, the January 2000 report primarily offers changes to records made in December 1999. The information in GPO PURL Alert is extracted from the updated GPO records by searching each monthly GPO file loaded in the University of Colorado at Boulder Libraries' catalog, Chinook, for the records with "PURL" in the 856 field. Attempts were made to eliminate records for which the PURL has already been distributed. Records for which GPO determined that the URL is dead were also included.

Array of Data: Each entry in this list contains the Superintendent of Documents classification number, the OCLC number, the GPO depository item number, the title, the text from the 530/538 field which usually ends with "current access is available via PURL" and the information contained in the 856 field. The records are sorted in depository item number order.

Additional Resources: Libraries who want to identify URLs and PURLs added to records by GPO prior to January 2000 should use either GPO's Catalog of U.S. Government Publications or the GPO MARC Internet Resources at the Basic Depository Library Documents web site. GPO PURL Alert lists are current supplements to these files. The archive of monthly GPO PURL Alert lists covers tapes loaded from January 2000- . Newly created PURLs are included in GPO's New Electronic Titles lists, and all GPO PURLs may be searched using the PURL Search Form included in the FDLP Desktop.

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GPO PURL Alerts are generated by Tim Byrne of the Government Publications Library, University of Colorado at Boulder, for the Cataloging Committee of the American Library Association's Government Documents Round Table.

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Last modified: 09/25/08

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