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obably correct about what is necessary.  However, I have so often looked at authority records and wondered whether the person on the record is the person on the piece in hand, I tend to think giving any information that helps in identifying someone (including the previous heading used) is useful.

Michael S. Borries
Cataloger, City University of New York
151 East 25th Street, 5th Floor
New York, NY  10010
Phone: (646) 312-1687
Email: [log in to unmask]

From: Program for Cooperative Cataloging [mailto:[log in to unmask]] On Behalf Of Hostage, John
Sent: Tuesday, August 08, 2017 5:41 PM
To: [log in to unmask]
Subject: Re: [PCCLIST] Tom Jackson

Move 670s to nb2011032496 and report the duplicate to LC.  I don’t think any notes or references are necessary.

------------------------------------------
John Hostage
Senior Continuing Resources Cataloger
Harvard Library--Information and Technical Services
Langdell Hall 194
Harvard Law School Library
Cambridge, MA 02138
[log in to unmask]<mailto:[log in to unmask]>
+(1)(617) 495-3974 (voice)
+(1)(617) 496-4409 (fax)
ISNI 0000 0000 4028 0917

From: Program for Cooperative Cataloging [mailto:[log in to unmask]] On Behalf Of Michael Borries
Sent: Tuesday, August 08, 2017 17:15
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: [PCCLIST] Tom Jackson

Well, if I can’t give a 400 field for an undated Tom Jackson, and I can’t give a 500 field for an undated Tom Jackson, what do I do?  While it is true that there are *bib* records with undated Tom Jacksons who are not this one, the authority record was unique as it stood.  It only referred to one Tom Jackson, the one born in 1932.

Michael S. Borries
Cataloger, City University of New York
151 East 25th Street, 5th Floor
New York, NY  10010
Phone: (646) 312-1687
Email: [log in to unmask]<mailto:[log in to unmask]>

From: Program for Cooperative Cataloging [mailto:[log in to unmask]] On Behalf Of Stephen Hearn
Sent: Tuesday, August 08, 2017 5:07 PM
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: [PCCLIST] Tom Jackson

Agreeing with Adam's comments-- RDA Appendix K.1 does allow for formulating new subfield $i texts, but the LC-PCC PS does not, at least when it comes to PCC records.

Also, the MARC Authority 5XX fields are for related established headings. NACO says that each 5XX should match to an established 1XX. So I don't think a 500 field could work in this case, unless the undated heading is established for yet another Tom Jackson. And even then, there'd be ambiguity in such a reference, which would be referring to both the 100 heading for another person and the former heading for the TJ born in 1932. That seems too ambivalent for a subfield $i.

Stephen

On Tue, Aug 8, 2017 at 3:48 PM, Michael Borries <[log in to unmask]<mailto:[log in to unmask]>> wrote:
Would a 500 field with the text “ǂi Earlier form of heading: ǂa Jackson, Tom ǂw r” work?  Is it allowed?

Michael S. Borries
Cataloger, City University of New York
151 East 25th Street, 5th Floor
New York, NY  10010
Phone: (646) 312-1687<tel:(646)%20312-1687>
Email: [log in to unmask]<mailto:[log in to unmask]>

From: Program for Cooperative Cataloging [mailto:[log in to unmask]<mailto:[log in to unmask]>] On Behalf Of Stephen Hearn
Sent: Tuesday, August 08, 2017 3:26 PM
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: [PCCLIST] Tom Jackson

If OCLC included a substantial number of "Jackson, Tom" headings controlled by the n 50027953 authority, one could make a case for changing its 100 to "Jackson, Tom, 1932-" (with the related name/title NARs) and deleting the other authority to resolve the conflicts and take advantage of OCLC's automated updating functionality. But I haven't found any of the many relevant bib records controlled by the undated authority.

On the other hand, all the OCLC bib records for "Jackson, Tom, 1932-" are controlled by their authority, so in terms of dynamic relation to the bib file, that authority is more important.

What I wound not do is add "400 1 $a Jackson, Tom $w nne" to the more recent authority. In our Alma catalog, that would have the effect of changing all our "Jackson, Tom" headings to "Jackson, Tom, 1932-", which we would prefer not to see happen. Likwewise, eliminating the authority for an undated heading in a case like this would be better for catalogs like ours.  Changing the existing heading by adding the date would add the date willy-nilly to all our "Jackson, Tom" authors, since Alma automatically controls them (where OCLC does not.)

Stephen



On Tue, Aug 8, 2017 at 12:31 PM, Robert Maxwell <[log in to unmask]<mailto:[log in to unmask]>> wrote:

I agree with you. Even though n 50027953 isn't coded as undifferentiated it might as well be since you have discovered that in the bib file the access point has been used to represent more than one person.



My opinion only, of course.



If you do choose to keep nb2011032496 and have n 50027953 canceled, don't forget that there are some related NARs that will also need revision.



Bob


Robert L. Maxwell
Ancient Languages and Special Collections Cataloger
6728 Harold B. Lee Library
Brigham Young University
Provo, UT 84602
(801)422-5568<tel:(801)%20422-5568>

"We should set an example for all the world, rather than confine ourselves to the course which has been heretofore pursued"--Eliza R. Snow, 1842.
________________________________
From: Program for Cooperative Cataloging <[log in to unmask]<mailto:[log in to unmask]>> on behalf of Michael Borries <[log in to unmask]<mailto:[log in to unmask]>>
Sent: Tuesday, August 8, 2017 10:41 AM
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Tom Jackson

This seems to be my week for finding duplicates.  NAR n  50027953 is for Jackson, Tom, no dates, but still unique.  NAR nb2011032496 is for Jackson, Tom, 1932-.  These individuals are the same person, having written the same book, with a different title in Britain.  There seem to be a great many records with the heading Jackson, Tom [no dates], but some of these seem not to be the Tom Jackson who writes books on how to get a job.  But there seem to be far fewer records with the heading that includes the date.  Still, because there are bib records which have headings with no date for a different Tom Jackson, I think it would be better to use the heading with the date as the authorized form, even though the form without the date was established earlier.  What is the opinion of this forum?

Michael S. Borries
Cataloger, City University of New York
151 East 25th Street, 5th Floor
New York, NY  10010
Phone: (646) 312-1687<tel:(646)%20312-1687>
Email: [log in to unmask]<mailto:[log in to unmask]>




--
Stephen Hearn, Metadata Strategist
Data Management & Access, University Libraries
University of Minnesota
170A Wilson Library (office)
160 Wilson Library (mail)
309 19th Avenue South
Minneapolis, MN 55455
Ph: 612-625-2328<tel:(612)%20625-2328>
Fx: 612-625-3428<tel:(612)%20625-3428>
ORCID:  0000-0002-3590-1242



--
Stephen Hearn, Metadata Strategist
Data Management & Access, University Libraries
University of Minnesota
170A Wilson Library (office)
160 Wilson Library (mail)
309 19th Avenue South
Minneapolis, MN 55455
Ph: 612-625-2328
Fx: 612-625-3428
ORCID:  0000-0002-3590-1242