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I agree with Kevin Randall. Creating a new authority in this case may be less necessary, since the existing "undifferentiated" authority has always in fact represented only one person; but doing so also saves us from having to add special-case rules for rare exceptions. The only downside to following the standard practice for dealing with undifferentiated name authorities is the need to relink bib records to a new authority, but the number of relevant bib records in OCLC is fairly small--18 by my count, of which 3 or 4 look to be for a different Larissa Forster. Hope the new authority can help resolve the how-many-Larissa-Forsters question. Stephen On Fri, Oct 17, 2014 at 2:11 PM, Kevin M Randall <[log in to unmask]> wrote: > It was my understanding that undifferentiated records are *not* to be > turned into differentiated records. Rather, when only one identity remains > on the record, a new NAR will be created for that identity, and the > undifferentiated record will be deleted. At least, that's the policy > according to how I read DCM Z1 008/32. > > > > Kevin M. Randall > > Principal Serials Cataloger > > Northwestern University Library > > [log in to unmask] > > (847) 491-2939 > > > > Proudly wearing the sensible shoes since 1978! > > > > *From:* Program for Cooperative Cataloging [mailto: > [log in to unmask]] *On Behalf Of *Rebecca Uhl > *Sent:* Friday, October 17, 2014 1:14 PM > *To:* [log in to unmask] > *Subject:* [PCCLIST] undifferentiated name headings > > > > I have a situation regarding an undifferentiated name authority, n > 2003019581, which I haven’t seen addressed as yet. I understand what we > should do when establishing a person on an undifferentiated authority on > his/her own; I also understand what to do when the last entity on such a > record is established on its own. But what do we do when the existing > undifferentiated name authority contains two names which end up being the > same person? We have information that Larissa Forster (the entity on the > undifferentiated record) is both the author of Wasser **and** the editor > of Namibia-Deutschland eine geteilte Geschichte, the two 670s on the > existing record. > > > > Can we simply change this record into a differentiated record, remove the > two bracketed 670s and add our additional information? Or do we need to > create an entirely new record, copying all the existing information and > adding our new information, then report the existing record for deletion? > > > > Thanks, > > > > Becky Uhl > Science Cataloger/Authority Control Coordinator > Arizona State University Libraries > (480) 965-9802 > [log in to unmask] > > > -- Stephen Hearn, Metadata Strategist Data Management & Access, University Libraries University of Minnesota 160 Wilson Library 309 19th Avenue South Minneapolis, MN 55455 Ph: 612-625-2328 Fx: 612-625-3428 ORCID: 0000-0002-3590-1242