Hi, John,

Only authorized LCGFT terms are affected by the change in MARC coding.   There are currently four disciplines represented there:  moving images; radio programs (and some non-radio spoken-word genres, such as Audiobooks); cartography; and law.  The genre/form headings for cookbooks are also affected.

Libraries using topical LCSH headings (authority tag 150) as genre/form terms (bibliographic tag 655) should continue to code them as LCSH headings using the second indicator value "0."  Of the examples you provided, the first is the correct coding:

655 #0 $a Rock music.

More information on the use of LCSH headings as genre/form terms in bibliographic records is provided in the genre/form FAQ, question 34.  The FAQ can be found at

I hope this helps,


Janis L. Young
Policy and Standards Division
Library of Congress

From: Program for Cooperative Cataloging [mailto:[log in to unmask]] On Behalf Of John Ilardo
Sent: Thursday, May 05, 2011 5:18 PM
To: [log in to unmask]
Subject: Re: [PCCLIST] LC to modify MARC coding for LCGFT

Hi Janis,

Under what circumstances are we to use the coding 655 \0? For example, if one wanted to use the LCSH "Rock music" as a genre/form heading, would this be coded:

1. 655 \0 $a Rock music.
2. 655 \7 $a Rock music. $2 lcsh
3. 655 \7 $a Rock music. $2 lcgft
4. 655 \7 $a Rock music. $2 local

I would not expect to find that heading coded as it is in #1--that coding having been traditionally reserved for established genre/form terms--but I get the impression from your message below that this is how such headings should be coded going forward. In a nutshell: under the new policy, is 655 \0 ever a valid coding?

I am not a music cataloger, so forgive me if this a poor example.


On Thu, May 5, 2011 at 3:56 PM, Young, Janis <[log in to unmask]<mailto:[log in to unmask]>> wrote:
[This message has been widely cross-posted.  Please excuse any duplication.]

Since 2007 the Library of Congress' Policy and Standards Division (PSD) has been developing genre/form terms, and in June 2010 determined that the new thesaurus, Library of Congress Genre/Form Terms for Library and Archival Materials (LCGFT), should be formally separated from Library of Congress Subject Headings (LCSH).  In order to accomplish this, on May 24, 2011 the existing genre/form authority records will be deleted and reissued with new coding.

The current coding for the genre/form authority records indicates that the terms are from LCSH, not LCGFT.  The LCCNs are prefixed by "sh" and 008/11 is set to "a," Library of Congress Subject Headings.  Therefore, the LCCNs and MARC coding both need to be revised.  This will require the deleting and reissuing of the genre/form authority records.

The approximately 800 existing authority records will be deleted and immediately reissued.  About 1600 records (deletes plus reissues) will be sent to subscribers as part of the May 24, 2011, Volume 26, Issue 21, distribution of subject authorities via the MARC Distribution Service (MDS).

Authority records for LCGFT terms will be coded as follows.

LCCN prefix:  gf
008/11: z ("Other")
040$f: lcgft


            008/11             z
            010                  $a gf2011987654 $z sh2009025020
            040                  $a DLC $b eng $c DLC $f lcgft
            155                  $a Topographic maps
            455                  $a Hypsographic maps
            455                  $a Hypsometric maps
            455                  $a Relief maps
            455                  $a Topographical maps
            555                  $w a $a Maps

            [Note that the deprecated LCCN is being retained in field 010$z, to facilitate automatic updates.]

As of May 24, 2011, new coding should be used when assigning LCGFT terms in bibliographic records.  That coding is as follows.

655 #7 $a [Term]. $2 lcgft


            Title:  Survivor: Thailand.
            655 #7 $a Survival television programs. $2 lcgft
                                655 #7 $a Nonfiction television programs. $2 lcgft

The genre/form FAQ and the Subject Headings Manual (SHM) will both be updated to reflect this change in policy.

For further information and the rationale for these revisions, please see the January 3, 2011 announcement, "Library of Congress to Reissue Genre/Form Authority Records."

Questions or comments on these plans or on the genre/form projects in general may be addressed to Janis L. Young [log in to unmask]<mailto:[log in to unmask]>, LC's genre/form coordinator.

Janis L. Young
Policy and Standards Division
Library of Congress

John M. Ilardo
Central Technical Services
University at Buffalo
134 Lockwood Library
Buffalo, NY 14260-2210
E-mail: [log in to unmask]<mailto:[log in to unmask]>
Phone: (716) 645-8591